Answers
Answer:
index fossils are fossils used to identify different geological periods of time. they are important for scientists to understand the time frame of which they're collecting strata from. criteria that make thes fossils are being easy to recognize, large in number and size
Related Questions
blood that is short of oxygen is often coloured blue on diagrams. Which blood vessels should be coloured blue, those that carry blood to the lungs or those that carry it back to the heart?
Answers
Answer:
to the lungs
Explanation:
it needs to be reoxygenated so it goes back into the lungs
name the selected and lettered biomes of north america
Answers
A sizable area of land where the climate results in a distinctive climax association of flora and animals.
Thus, Typically, the word "biome" refers to habitats found on land. There are approximately six major biomes in North America.
Oceans and other aquatic environments are frequently classified into many zones, including the intertidal, pelagic, benthic, photic, and aphotic zones and biomes.
An assortment or grouping of specific dominant indicator species found in a particular area. Numerous distinct plant groups, including creosote bush scrub, shadscale scrub, sagebrush scrub, Joshua tree forest, and pinyon-juniper woodland, make up California's desert biome.
Thus, A sizable area of land where the climate results in a distinctive climax association of flora and animals.
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The biomes of North America are diverse. Some selected North American biomes and their associated letters:
A. Tundra
B. Taiga (Boreal Forest)
C. Temperate Rainforest
D. Temperate Deciduous Forest
E. Grassland (Prairie)
F. Desert
G. Chaparral (Mediterranean)
H. Temperate Rainforest
I. Tropical Rainforest
A. Tundra: An area devoid of trees, with a cold, short growing season and low-lying vegetation such as mosses and shrubs.
B. Taiga (boreal forest)- Largest biome which characterized by cold winters, temperate summers, and coniferous forest composed primarily of spruce, pine, and fir.
C. Temperate rainforest: This type of forest is found along the Pacific coast and is characterized by warm temperatures, abundant amounts of rainfall, and a lush canopy of large evergreen trees.
D. Temperate Deciduous Forest: An eastern biome with distinctive climates, average rainfall, and trees such as oaks and maples that lose their leaves in winter.
E. Prairie: A central biome with wide open grasslands, fluctuating temperatures, moderate rainfall, and grasses and herbaceous plants.
F. Desert: Dry, hot and dry biome in the southwest with some vegetation adapted to low rainfall.
G. Chaparral (Mediterranean): A coastal biome consisting of small trees and plants that can withstand drought conditions and warm, wet winters.
H. Temperate Rainforest: Located along the Atlantic coast, it has a mix of coniferous and deciduous trees, heavy rainfall, and warm temperatures.
I. Tropical rainforest: A small region in southern Florida that is characterized by warm temperatures, abundant amounts of rainfall, dense foliage, and a wide variety of plant and animal species.
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PLEASE HELP, ILL GIVE YOU A BRAINLY OR WHATEVER ITS CALLED!!! Why would two parents with dominant traits be able to pass down recessive traits, but two parents with recessive traits cannot pass down dominant traits? (explain your answer with a few sentences)
Answers
Answer:
because the traits are not dominants it in the name negus
Explanation:
1. For which discovery about DNA do Watson and Crick receive credit?
A. DNA is the molecule that genes are made of.
B. The amount of adenine equals the amount of thymine in an organism.
C. Phosphate-pentose bonding along the nucleotide backbone is covalent.
D. The shape of DNA is a double helix.
Answers
Answer:
Hello There!!
Explanation:
The answer is D. The shape of DNA is a double helix.
hope this helps,have a great day!!
~Pinky~
Read God's rules of health and sanitation for Israel in
Lev. 11:1-8 and Deut. 23:12-14. How might these
rules have protected His people from diseases such as
those caused by parasitic worms? Relate your answer
to the mode of transmission of many parasitic worms.
Answers
Answer:
It is transmitted in the body through contaminated food.
Explanation:
These rules of God's about health and sanitation have protected Israeli people from diseases which was caused by parasitic worms because these parasitic worms entered the body by not washing hands and contaminated food. These parasitic worms are present on the skin as well as in the food so the person can save itself from these parasitic worms if he or she wash hands properly before eating the meal and eat clean, fresh and healthy food.
The part of the muscular system responsible for movement is
a. cardiac
b. smooth.
c. skeletal.
Answers
the skeletal muscles are attached to the bones which are partly controlled by the central nervous system.
what differences can you see between the fibers at this microscale? list at least two differences
Answers
When it comes to the differences between fibers at the microscale, there are several differences that can be observed.
When it comes to the differences between fibers at the microscale, there are several differences that can be observed. Here are two of the most prominent ones:Color - Fibers at the microscale differ in color. In particular, different types of fibers tend to have different hues, which makes it easy to differentiate between them. Some fibers, for instance, are white, while others are off-white, gray, or brown. Microscope - The type of microscope used to view fibers at the microscale can also make a significant difference. Different microscopes have different lenses, which can affect the way that the fibers appear. For example, some microscopes have polarizing filters that can be used to view fibers in different colors or patterns. Others have higher magnification levels, which can reveal more details about the fiber's structure. Finally, some microscopes have a built-in light source that can be used to illuminate fibers from different angles, which can also affect their appearance.
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There are many diseases that do not infect a person more than once, such as chickenpox and measles. What is responsible for this lifetime immunity?
*The innate immune response, because barriers to entering the body improve with age.
*The innate immune response, because adults have more white blood cells than children.
*The acquired immune response, because antibodies are developed from previous infections.
* The acquired immune response, because it responds rapidly to broad classes of pathogens.
Q1.b. You are studying a population of wild coyotes and notice that every three years there is an epidemic of a bacterial disease. Which of the following is the most likely explanation for this periodic cycling of the disease?
*New coyotes, which are susceptible to the disease, are continuously born into the population.
*Coyotes are dying from other causes over time.
*During an outbreak, the proportion of coyotes who are infected slowly falls as they recover.
*Coyotes from other populations who have already been infected and recovered from the disease immigrate into the study population.
Q1.c. Two directly transmitted viral diseases have the same basic reproduction number (R0), even though their dynamics are different. Which of the following differences between the two diseases could lead to the same basic reproduction number?
*One disease has a higher transmission rate and a longer recovery period than the other.
*One disease has a lower transmission rate and a longer recovery period than the other.
*One disease has a lower transmission rate and a shorter recovery period than the other.
*For one disease, the recovery period is long; for the other, no one recovers.
Answers
Lifetime immunity to diseases like chickenpox and measles is primarily due to the acquired immune response, as antibodies are developed from previous infections. The most likely explanation for the periodic cycling of a bacterial disease in a population of wild coyotes is the continuous birth of susceptible coyotes into the population. Differences in transmission rates and recovery periods can result in two directly transmitted viral diseases having the same basic reproduction number (R0).
For Q1.a, the acquired immune response is responsible for lifetime immunity to diseases like chickenpox and measles. Previous infections stimulate the development of antibodies that provide specific and long-lasting protection against future infections.
In Q1.b, the most likely explanation for the periodic cycling of the bacterial disease in wild coyotes is the continuous birth of susceptible coyotes into the population. As new individuals are born, they lack immunity to the disease, leading to periodic epidemics.
Regarding Q1.c, two directly transmitted viral diseases can have the same basic reproduction number (R0) despite different dynamics. One possible difference that could result in the same R0 is that one disease has a higher transmission rate but a longer recovery period, while the other disease has a lower transmission rate but a shorter recovery period. The combination of transmission rate and recovery period determines the overall spread and impact of the diseases, resulting in the same R0 value despite distinct dynamics.
In summary, lifetime immunity is due to the acquired immune response, the periodic cycling of a disease in coyotes is likely due to continuous birth of susceptible individuals, and different transmission rates and recovery periods can lead to the same basic reproduction number in two viral diseases.
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True or False:Sunlight and the force of gravity are essential components to the water cycle
A. True
B.False
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if you were to make a partial diploid with the genotype trp r trpoc / trprs trpo , what would happen? what is the dominance relationship between trpoc and trprs ?
Answers
The existence of two distinct alleles for the trp gene in the genotype trpr trpoc / trprs trpo shows that the organism is heterozygous at that locus. The trp gene has two copies: one with the "r" and "oc" alleles (trpr trpoc) and the other with the "rs" and "o" alleles (trprs trpo).
According to the partial diploid genotype, there are two copies of the trp gene, one on the regular chromosome (trpr trprs) and the other on an extra piece of DNA, which is sometimes referred to as an F' plasmid (trpoc trpo). The trpoc and trpo alleles are present on the F' plasmid.
The specific interactions between the trp alleles might change based on the nature of the alleles in terms of gene expression and dominance relationship. However, in most cases, the "r" allele would be dominant over the "oc" allele if the "r" allele is a functioning wild-type allele and the "OC" allele is a non-functional or partially functional allele. This indicates that while the "oc" allele may result in a diminished or nonexistent function, the "r" allele would typically result in the development of the functioning trp gene product.
The "rs" allele would be dominant over the "o" allele if it is a functioning wild-type allele and the "o" allele is a non-functional or partially functional allele.
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sexual selection is a type of selection in which traits found in one sex increase in frequency as a consequence of their beneficial effects on
Answers
Sexual selection refers to a type of selection whereby the traits found in one sex increase in frequency as a consequence of their beneficial effects on the reproductive success of that sex.
Sexual selection is primarily responsible for the evolution of traits that enhance mating success, even at the expense of survival. Sexual selection is influenced by both intrasexual competition, where members of the same sex compete for access to the opposite sex, and intersexual selection, where members of one sex choose their mates based on specific traits. The sexually selected traits are not necessarily beneficial for survival, but they increase the likelihood of mating success and reproductive success.
This leads to the evolution of specific traits that enhance mating success such as ornamentation, exaggerated body parts, and behaviors like singing and dancing. Sexual selection has been observed in a wide range of species from insects to mammals, including humans, and can play a critical role in shaping the evolution of populations. So therefore sexual selection refers to a type of selection whereby the traits found in one sex increase in frequency as a consequence of their beneficial effects on the reproductive success of that sex.
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Select the statements below that accurately describe the functions of the skeletal system. Check all that apply.
1) The skeletal system provides jobs for doctors who are experts on human bones.
2) The skeletal system creates blood cells.
3) The skeletal system stores nutrients such as calcium and potassium for later use in the body.
4) The skeletal system helps humans know what nutrients to eat.
5)The skeletal system provides structure and support to tissues and organs of the body.
Answers
Answer:
5)The skeletal system provides structure and support to tissues and organs of the body.3) The skeletal system stores nutrients such as calcium and potassium for later use in the body.
Explanation:
Answer:
The skeletal system creates blood cells.
The skeletal system stores nutrients such as calcium and potassium for later use in the body.
The skeletal system provides structure and support to tissues and organs of the body.
Explanation: ed2020 :)
If a weather system with strong winds approached Lake Michigan
from the west, how might the speed of the winds change as the
system traversed the Lake?
Answers
If a weather system with strong winds approached Lake Michigan from the west, the speed of the winds might change as the system traversed the Lake. Lake Michigan is one of the largest freshwater lakes in the United States. Its sheer size and depth can have a significant impact on the weather and climate of the surrounding areas. The winds over Lake Michigan tend to be stronger and more turbulent than in the surrounding areas. When a weather system approaches from the west, it will typically encounter a sudden change in temperature and moisture content as it crosses over the lake.
As the weather system traverses the lake, the speed of the winds may change due to various factors. The winds can be affected by the shape and size of the lake, the temperature and moisture content of the air, and the rotation of the earth. In general, the winds over Lake Michigan tend to be stronger and more unpredictable than in other parts of the Midwest.
The speed of the winds can also change due to the effects of topography and the presence of other weather systems. If the weather system encounters a mountain range or other obstacles, the winds can be forced to accelerate or decelerate. Similarly, if the system encounters another weather system, it can be influenced by the interaction between the two systems.
Overall, the speed of the winds over Lake Michigan can vary significantly depending on a wide range of factors. While the lake can have a significant impact on the local weather patterns, it is also influenced by larger-scale atmospheric processes that are more difficult to predict.
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Bacteria Natural Selection
Answers
Answer:
Bacterial resistance arises through the simple process of natural selection. Bacteria divide rapidly, but DNA replication is imperfect. In the presence of antibiotics, while most bacteria are killed, a small number of resistant mutants may survive and take over.
Explanation:
Which is involved in refraction? A. colors B. shadows C. speed of light D. absorption of light
Answers
the speed of light involved in refraction
During anaphase the chromosomes line up ?
True or false
Answers
what is the outer space treaty? what idea that wood discusses does this treaty help to illustrate? how? explain.
Answers
The Outer Space Treaty was approved by the United Nations General Assembly in 1967.
It is often referred to as the Treaty on the Principles Governing the Activities of States in the Exploration and Uses of Outer Space, Including the Moon and Other Celestial Bodies. It serves as the framework for regulating space operations and advancing the peaceful and cooperative use of space.
The treaty outlines several important principles, such as the prohibition of deploying WMD in space, the promotion of space exploration and use for the benefit of all nations, the prohibition of any country claiming ownership of celestial bodies, and Global accountability for space activities.
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Which of the following NOT beneficial association between fungi and humans? Act The The Fermentation An outbreak development development of of the fungal Saccharomyces yeasts mushroom pathogen antibiotic penicillin cultivation for an from the 1 agricultural peajq human fungal and system mold consumption alcoholic Penicillium beverages decomposers aq uatic ecosystems
Answers
The statement that is NOT a beneficial association between fungi and humans is an outbreak of a fungal pathogen in an agricultural system, option (A) is correct.
Fungal pathogen can cause devastating effects on crops, leading to reduced yields and economic losses. These pathogens can infect plants, leading to diseases such as blights, rots, and wilts. They can also affect stored agricultural products, causing spoilage and reducing their quality.
Outbreaks of fungal pathogens can have significant negative impacts on food production and security, as well as the livelihoods of farmers. Mushroom cultivation provides a nutritious food source, Saccharomyces yeasts contribute to the production of bread and alcoholic beverages, and the discovery of penicillin has revolutionized medicine by providing an effective antibiotic treatment, option (A) is correct.
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The complete question is:
Which of the following is NOT a beneficial association between fungi and humans?
A) An outbreak of a fungal pathogen in an agricultural system
B) The development of mushroom cultivation for human consumption
C) Fermentation by Saccharomyces yeasts to produce bread and alcoholic beverages
D) The development of the antibiotic penicillin from the fungal mold Penicillium
PLEASEEEE HELPPPPPPPPPPP
Professor Marcus has identified a new species of beetle in the Amazon Rainforest. The professor then investigates the process of gene expression in the cells of the beetle. Which is an expected result of the investigation?
A The processes of transcription and translation are unique in the beetle.
B The process of translation in the beetle is similar to other organisms, but involves a unique genetic code.
C The process of transcription in the beetle is similar to other organisms, but involves a unique set of nucleic acids in mRNA.
D The processes of transcription and translation, including the genetic code, are the same in the beetle as in nearly all other organisms.
Answers
Answer:
D The processes of transcription and translation, including the genetic code, are the same in the beetle as in nearly all other organisms.
Explanation:
Transcription is the cellular process where a specific DNA fragment called 'gene' is used as a template to create a complementary RNA molecule, usually a messenger RNA (mRNA). Subsequently, this mRNA is then used to synthesize a polypeptide chain (i.e., a protein) in the ribosomes. In eukaryotic organisms such as, in this case, beetles, both transcription and translation are essentially the same processes, and the genetic code used in the protein synthesis is also the same. The difference between beetles is the variation among DNA nucleotide sequences (genomes) which are used as templates to synthesize mRNAs, thereby their final products (proteins) are also different.
The air outside is so warm that this snowman is melting. During melting, the water molecules (gain/lose) thermal energy. How does the motion of the molecules change during melting?
Answers
Answer:
they gain thermal energy because they are warming up. the molecules are speeding up because liquid molecules are faster the solid molecules which don't move much.
Explanation:
Which of the following is NOT one of the 4 bases in DNA?
1)Adenine
2)Thymine
3)Automine
4) Guanine
Answers
Answer:
3) Automine
Explanation:
Adenine, thymine, cytosine and guanine are the four nucleotides found in DNA.
So automine watev that is correct
Houses have been built around a small retention pond, increasing the fertilizer runoff into the pond. This has led to algal blooms in the pond which periodically reduce the amount of dissolved oxygen available in the water. What will be the most likely long-term effect on the fish population living in the pond if the situation with the fertilizer does not change?
The fish population will grow as more offspring are born that can take advantage of the new conditions.
The population will be replaced by a different species of fish that consumes algae for food.
The fish population will learn to survive with less oxygen and more algae in the water.
The population will evolve, leaving only those genetically equipped to deal with low oxygen levels.
Answers
Answer: The population will evolve, leaving only those genetically equipped to deal with low oxygen levels. brainliest
Explanation:
Answer:
The population will evolve, leaving only those genetically equipped to deal with low oxygen levels.
Explanation:
hope this helps
what does jaws of life do
Answers
Answer:
The "Jaws of Life" is a crucial tool to fire and rescue squads to save hundreds of lives every year. ... The “Jaws of Life” is used indeterminately for pretty much any type of heavy-duty tool that acts like a pair of scissors, cutter, spreader, or ram-device aimed at slicing and dicing through most automotive metals.
Explanation:
ANSWER QUICKLY WILL GIVE BRAINLIEST TO THE FIRST PERSON TO ANSWER A REAL ANSWER
Jasmine went to the tide pool. She took pictures of some animals. How can you tell which tide zone the animals live in?
Answers
Answer:
food and population
Explanation:
Different animals eat different things for example a sea urchin eats seaweed so if she took a picture of a urchin you would find it in the one that has the most vegetation. the urchins try to space out so look how many animals are in the picture. I hope that helps ;)
Answer:
food and population :)
Explanation:
please give brainliest?! :):):)
which brain area is rich in neurons and uses norepinephrine?
Answers
The locus coeruleus (LC) is the part of the brain that is rich in neurons and uses norepinephrine (NE).
The locus coeruleus (LC) is the part of the brain that is rich in neurons and uses norepinephrine (NE). The LC is located in the dorsal pons and is responsible for a variety of physiological responses, including regulating attention, memory, learning, and emotional responses, and controlling arousal.
When an organism is exposed to a new, uncertain, or challenging environment, the LC becomes more active and releases more NE, increasing alertness and vigilance. On the other hand, when an organism is in a familiar, secure, or low-stress environment, the LC becomes less active and releases less NE, promoting relaxation and rest.
The LC-NE system is also involved in the stress response and the fight-or-flight response. During periods of stress, the LC-NE system is activated, leading to an increase in heart rate, blood pressure, and glucose metabolism, as well as a decrease in digestion, immune function, and sleep. In addition, chronic stress can lead to dysregulation of the LC-NE system and contribute to the development of anxiety and depression.
In summary, the locus coeruleus is a brain area that is rich in neurons and uses norepinephrine to regulate attention, memory, learning, emotional responses, arousal, stress, and the fight-or-flight response.
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How does the color adaptation help fish residing in the coral reefs?
Answers
Answer:
Fish found in coral reefs also have bright coloring to help with mating or camouflage. Due to the wide variety of prey found in coral reefs, the fish have developed a generalized feeding structure to take advantage of the biodiversity. Lastly sessile animals, such as coral, have adapted toxins to keep away predators.
Explanation:
Answer:
Many fish have color patterns that help them blend in with their environment. This may allow the fish to avoid being seen by a predator. Some fish, such as the flat fishes (Pleuronectiforms) , can change their skin coloration to match the surrounding habitat. Fish can also have disruptive markings to hide body parts
Explanation:
Impermeable clay layers are called are called 1.5 points Save Answer and permeable layers that transmit groundwater
Answers
Impermeable clay layers are called aquitards and permeable layers that transmit groundwater are called aquifers. The management of aquifers is essential for ensuring a sustainable supply of water, especially in areas where the water supply is limited. In conclusion, impermeable clay layers are called aquitards and permeable layers that transmit groundwater are called aquifers.
Aquitards are the geologic formations that prevent or limit the movement of groundwater. In other words, they are the layers of rocks or sediments that have low hydraulic conductivity. They do not permit the flow of groundwater and trap it beneath them. Aquifers, on the other hand, are the layers of rocks or sediments that can transmit water through them. They have high hydraulic conductivity, which allows groundwater to move through them easily. They can be made of materials like sandstone, limestone, and gravel.The groundwater flow is essential for many natural systems, including rivers, wetlands, and lakes. Moreover, groundwater also plays an important role in supplying drinking water for people and irrigating crops. The management of aquifers is essential for ensuring a sustainable supply of water, especially in areas where the water supply is limited.In conclusion, impermeable clay layers are called aquitards and permeable layers that transmit groundwater are called aquifers.
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Drag each label to the correct location on the chart.
Sort the actions and terms based on the type of pollution they directly cause.
Answers
Soil pollution: spreading chemical fertilisers on the ground, flood, mining activity
help me fill out the second blank and it's not decrease bc I just got it wrong
Answers
Answer:
Remain the same
Explanation:
Question 4
2 pts
The number of chemical industries along Florida's rivers is increasing. What is the most
likely consequence of this increased industrialization?
O a decrease in the amount of water pollution
O an increase in the amount of water available for recreational use
an increase in the destruction of natural food webs
O a decrease int he amount of water needed by industry
Answers
Answer:
The correct answer would be - an increase in the destruction of natural food webs.
Explanation:
Increasing chemical industries near the river cause harmful effects to the environment by various means, including air pollution, dumping untreated chemical or industrial waste, and wastewater in the river. This will lead to a lack of potable water, contamination of the food chain, destruction of biodiversity, and many more.
The destruction of biodiversity can be caused by the increasing the unbridled growth of phytoplankton, eutrophication process that will consume more oxygen and cause algal bloom and decrease the oxygen in the water and destroys the organism and natural food web.