Answer:
C
Explanation:
Before the advent of metallurgy, humans used wood, stone, and bones for tools.
What is metallurgy?It is a branch of science that deals with the properties of metals as well as their application in building useful metallic tools.
Metallurgy has helped man to develop several useful tools and equipment which are vital to the existence of man.
Before the advancement of technology, man use improvised tools made from wood, stones, and bones.
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What would happen to the velocity of a river if the gradient increased?
Answer: Therefore, the rivers speed is at its maximum at the headwaters (high gradient, high energy) and at its minimum at the base level (no gradient, lowest energy). An incoming tide can reverse a river and cause it to flow against the gradient -- uphill! Erosion and speed have a direct relationship. As speed increases erosion increases as well.
Explanation:
The velocity of a river increases if the gradient increased.
What is Velocity?Velocity may be defined as the rate of change of distance of a body with respect to time.
It is known that, if the gradient increases, the velocity of a river increases or the speed of the stream flows becomes faster. This is because the gradient is directly proportional to the velocity of an object.
Therefore, the velocity of a river increases if the gradient increases.
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Name the nitrogen bases in RNA.
Answer: uracil
Explanation: Nucleic Acids: DNA and RNA
Nucleic Acids: DNA and RNA Four different types of nitrogenous bases are found in DNA: adenine (A), thymine (T), cytosine (C), and guanine (G). In RNA, the thymine is replaced by uracil (U).
What chemical property do phospholipids have that allow them to interact 2 points
with substances like water AND oil? *
Phospholipid molecules are completely nonpolar so they don't interact with polar
compounds
Phospholipid molecules are both polar and nonpolar
Phospholipid molecules are completely polar so they don't interact with nonpolar
compounds
O Phospholipid molecules are small so they are unaffected by water and oil
Answer:
The Lipid Bilayer
Explanation:
The lipid bilayer has been firmly established as the universal basis for cell-membrane structure. It is easily seen by electron microscopy, although specialized techniques, such as x-ray diffraction and freeze-fracture electron microscopy, are needed to reveal the details of its organization. The bilayer structure is attributable to the special properties of the lipid molecules, which cause them to assemble spontaneously into bilayers even under simple artificial conditions.
What is the importance of photosynthesis?
It's not oxygen production. The essential characteristic of photosynthesis is to convert solar power into chemical energy and then keep that chemical power for future use. For the most part, the planet's residing systems are powered by using this process.
The Paramecium is an aquatic, single-celled organism. What is a challenge of homeostasis for this organism?
O muscle attachment points
O maintaining a stable size and shape
O constructing cytoskeletal elements
O creating enough protein
Answer:
I think it is the second option, maintaining a stable size and shape
Explanation:
I hope this helps, please give me brainliest
If a person did not eat for serveral days, which sequence of events would occur
Answer:
Depends. If you have water you can last for months. If it's only food then first your cells start to eat at you from the inside out, then hallucination occurs, then you will try to eat anything around you no matter what it is, and then you end up falling asleep for a while.
Explanation:
Sorry if that was a creepy explanation hope this helped^^
5
3'
GCGACUAAAUUU
6. What is the sequence of amino acids that will be translated from the mRNA above?
Most earthquakes occur in the center of continental plates. True False
Answer:
Explanation:
False and plzz give me brainliest
Answer:
false, they are usually where the plate boundary is
After burning fossil fuels, most of the carbon winds up in the:
A. atmosphere
B. ocean
C. rock layers
D. decomposers
Answer:
a
Explanation:
What was George H. W. Bush’s “new world order?
Answer:
“where the rule of law… governs the conduct of nations,” and “in which a credible United Nations can use its peacekeeping role to fulfill the promise and vision of the UN’s founders.”
Explanation:
Theres a video as well :)
What does the law of conservation of energy state?
O A Energy can be created from nothing.
OB.
Energy cannot be destroyed.
ОС.
Energy cannot change forms.
OD.
The total amount of energy in a system changes continuously.
Answer:
Energy cannot be created nor destroyed.
So...
OB
Explanation:
Which of the following forms of water pollution is most associated with mining?
Awnser: Acid Mine Drainage. Acid Rock Drainage (ARD) is a natural process whereby sulphuric acid is produced when sulphides in rocks are exposed to air and water.
Answer:
the answer is acids and heavy metals
Explanation:
2/3 of the harmful emissions are released from power plants that burn coal to generate electricity.
Adaptations have no affect on an organism's ability to survive in a specific environment.
True or False
Answer:
False
Explanation:
They do
PLEASE HURRY!
What is the energy change taking place when plants make food in the presence of sunlight
Potential energy is transformed into kinetic energy
Kinetic energy is transformed into potential energy
Chemical energy is transformed into radiant energy
Radiant energy is transformed into chemical energy
Answer: Radiant energy
Explanation:
Most viruses are about _____ times smaler than the average cell.
a 1,000
b 300
c 100
d 10
Answer:
A) 1000
Most viruses are 1000 times smaller than the average cell
And viruses are smaller again — they're about a hundredth the size of our cells. So we're about 100,000 times bigger than our cells, a million times bigger than bacteria, and 10 million times bigger than your average virus!
I would put A. 1,000 if that is your only other option
If insulin receptors stopped working. The body would no longer receive the message from insulin. Cells would not take up sugar, blood sugar levels would rise, and death would result.
Answer:
yes I believe that is correct
the question is: what would happen if cells stopped taking up insulin
How can I get rid of my chapped lips? Everything I do doesn’t really work, I need to exfoliate them but idk how to do that. Is there any way I can stop biting them too? It’s a nervous thing I do when I’m anxious and I need a way to stop doing it thx.
Answer:
me too, but what i do sometimes is just chew on gum, it helps a lot
Explanation:
HELP ON THIS ONE PLZ!!!!!!!!
Answer:
Active Transport
Explanation:
Active transport is what is used to help material move through a cell. In this picture it shows the material going through a part in the mitochondria which is like a door that opens to only certain things.
Answer:facilitated diffusion
Explanation: Because you smell like porch
Folds and faults, extension stress, compression stress, and shear stress are all the result of what?
A. a sign that the end of the world is near
B. the imploding of the earth's crust
C. movement at the tectonic plate boundaries
D. tectonic plate disintegrating
Answer:
C. movement at the tectonic plate boundaries
Explanation:
Answer:
Hi,
I just learned about this! The answer is Movement at the Tectonic Plate Boundaries!
Explanation:
Some People Know this as Tectonic Stress!
Hope this helps you guys! Have a wonderful rest of you day!
16:42 How are gross production and net production different? a. Net production is always greater than gross production. b. Net production is always less than gross production. c. Only animals have net production. d. Only plants have net production. Please select the best answer from the choices provided
Answer:
Explanation:
in my opinion i think its B
Answer:
i can confrim it is b
Explanation:
The diagram shows two chromosomes paired up.
Which process is being shown?
sexual reproduction
independent assortment
crossing over
chromosome separation
The diagram is not provided with the question. However, the answer is based on the matter provided with the question and the best of knowledge.
Answer:
The correct answer is - crossing over.
Explanation:
Crossing over occurs in prophase I or metaphase I of the meiosis type of cell division which takes place in the sex cells during sexual reproduction. During this process cells that have two autologous or correspondent chromosomes pair up together so the exchange of genetic material f non-sister chromatids can take place between correspondent chromosomes and result in a new allelic combination. The process is also known as synapsis as the two chromosomes pair up.
Which of the following is not necessary for evolution to occur?
Which is an example of an instinct?
A rabbit hides when it observes a predator.
A dog wags its tail when it hears a doorbell ring.
A boy pulls his hand away after touching a hot surface.
A dolphin swims through a hoop during an amusement park show.
Answer:
A) A rabbit hides when it observes a predator.
Explanation:
Answer:
rabbit
Explanation:
on EDGE 2021
Tracheae definition
Answer:
The airway that leads from the larynx
Explanation:
Answer: Insects breathe through a complex network of tubules, the tracheae. Large tracheae connect to spiracles opening at the surface of the body, extending from the larynx to the bronchial tubes where air enters and carbon dioxide exits.
1. What is the difference between primary waves (P-waves) and secondary waves (S-waves)?
A. Primary waves are elastic waves that travel faster than secondary waves that are compression waves.
B. Primary waves are compression waves that travel faster than secondary wave with elastic rope-like movement.
C. Primary waves are compression waves that travel slower than the secondary wave with elastic rope-like movement.
D. Primary waves are rolling waves and secondary waves cause horizontal shifting, both move along the Earth's surface.
Answer:
Explanation:
Primary waves travel faster, move in a push-pull pattern, travel through solids, liquids and gases, and cause less damage due to their smaller size. Secondary waves travel slower, move in an up-and-down pattern, travel only through solids, and cause more damage due to their greater size.
The statement that best describes the difference between primary waves (P-waves) and secondary waves (S-waves) is as follows:
Primary waves are compression waves that travel faster than secondary waves with elastic rope-like movement.Thus, the correct option for this question is B.
What do you mean by Primary waves?Primary wave may be defined as a type of seismic wave that travels faster than secondary waves. They are longitudinal compression waves similar to the movement of a slinky. These are the first types of waves that are effectively detected by a seismograph.
On contrary, secondary waves are those waves that travel slower than Primary waves. These waves are detected at last by a seismograph. These waves travel only through solids.
Therefore, the correct option for this question is B.
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NEED HELP ASAP‼️‼️‼️‼️‼️‼️‼️‼️‼️‼️❗️❗️❗️❗️❗️❗️❗️ SHOW WORK OR IF NOT BE ACCURATE WITH THE ANSWER ‼️‼️‼️‼️‼️‼️
What does Step III in the diagram below illustrate?
Answer:
Coversion of substrate into products
Explanation:
Brainliest to right answer!!
Answer:Sun
Explanation:
Using the information recorded by seismographs, scientists learned more about the depth and density of Earth’s layers.
True
False
Answer:
True
Explanation:
I took the test, and got it right.
Which statements describe thigmotropism? Check all that apply.
Thigmotropism is a plant's response to touch.
Thigmotropism is a plant's response to an external stimulus.
Thigmotropism occurs only slowly.
Thigmotropism can occur quickly or slowly.
Thigmotropism may involve the way in which a plant grows.
Thigmotropism may involve the closing and opening of plant leaves.
Answer:
Thigmotropism is a plant's response to touch.
Thigmotropism is a plant's response to an external stimulus.
Thigmotropism can occur quickly or slowly.
Thigmotropism may involve the way in which a plant grows.
Thigmotropism may involve the closing and opening of plant leaves.
Answer:
A) Thigmotropism is a plant's response to touch.
B) Thigmotropism is a plant's response to an external stimulus.
D) Thigmotropism can occur quickly or slowly.
E) Thigmotropism may involve the way in which a plant grows.
F) Thigmotropism may involve the closing and opening of plant leaves.
Explanation:
All of them except for c
What qualifications do you need to be a research scientist?
A. High school diploma
B. College degree
C. High 10
D. Ph.D