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11Alexandr11 [23.1K]
3 years ago
7

Help please i need the answer for this pretest!

Biology
2 answers:
natali 33 [55]3 years ago
4 0
B, (layer C is the youngest layer) :)
inessss [21]3 years ago
3 0

Answer:

C) D!ke k is older than layer I

Explanation:

it seems as if k was there before everything else. due to the fact that it seems to be the lowest level.

it didnt let me put d i k e

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Urban landfills use procedures that increase the decay rate for most trash. accelerate the process by which aluminum is recycled
Flauer [41]
I'm assuming that the choices are the ways urban landfills use to increase decay rate for most trash? If so, then the answer would be '<span>increase the number of aerobic bacteria'. Increasing the number of aerobic bacteria increase the decay rate for most trash.</span>
8 0
3 years ago
Assigning humans to discrete categories based on common ancestry is known as ______ and was once a main way that scientists stud
Ne4ueva [31]

Answer: Racial classification

Explanation: Racial classification can be defined as the way humans are classified based on their physical and social traits which they have such as how they look, their skin color, hair texture, the native languages they speak.

Scientists used racial classification to learn how unique and different humans are.

7 0
3 years ago
Can someone help me with this slide pleaseeeee?? ASAP
diamong [38]
A dependent variable is a value that depends on another, so what relies on the other! :)
8 0
3 years ago
Astrocytes A. all of these B. induce the formation of the blood-brain barrier C. physically support neurons D. are important in
Keith_Richards [23]

Astrocytes perform the function of all of the given options i.e., induce the formation of the blood-brain barrier, physically support neurons, are important in the repair of brain injuries and in neural formation, take up excess K from the brain ECF.

  • Both invertebrates and vertebrates have Astrocytes, a star-shaped cell kind of neuroglia, in their nervous systems.
  • Astrocytes can be separated into protoplasmic and fibrous kinds. In the central nervous system's white matter, myelinated nerve fibers are frequently surrounded by fibrous astrocytes.
  • Numerous cytoplasmic processes on astrocytes end on axons, neuronal cell bodies, blood vessels, and synaptic terminals.

b) The development of the blood-brain barrier is aided by the Astrocytes

c) Astrocytes support neurons physically and metabolically.

d) Astrocytes help in transfer of blood-borne materials to the neuron, and injury response of the brain and repair of brain injuries.

e) They also help with detoxification, migratory guidance, energy metabolism regulation and removal of excess K from brain ECF.

learn more about astrocytes here: brainly.com/question/6966928

#SPJ4

3 0
2 years ago
Which of the following statements related to energy conversion and generation of x-rays is correct?
pishuonlain [190]

Answer:

The answer is D.

Explanation:

The way x-rays are produced is as follows; using a vacuum environment in a tube, the cathode is heated to a degree where it releases electrons, then these electrons collide with the anode releasing energy that create the x-rays.

All of the options are correct. Although the electron most likely won't stop, it will slow down and change direction after the collision. The law of conservation of energy is also applied in this situation, meaning that the kinetic energy of the electron released by the cathode will transfer to the anode to produce the x-rays. Most of the energy after the collision is converted into heat, which is why the metal used as the anode can heat up to 2000 degrees celcius.

I hope this answer helps.

4 0
3 years ago
Read 2 more answers
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