Answer:Tropical rainforests occur in regions of the tropics where temperatures are always high and where rainfall exceeds about 1,800 to 2,500 mm (about 70 to 100 inches) annually and occurs fairly evenly throughout the year.
Explaintion
Answer: The answer is A. Explains how organisms change in response to the environment.
Explanation: A scientific theory is an EXPLANATION of an aspect in the natural world. In other words, it just tells why something happens. Now it is not just a guess, it is well-supported by evidence and previous studies.
Now to knock out your other choices:
B. is wrong because:
A scientific theory does not predict. It can serve as a basis for a prediction, or what you call a hypothesis, but it does not predict an outcome.
C. is wrong because:
As mentioned earlier, a theory is WELL-SUPPORTED by evidence and previous research.
D. is wrong because:
A theory does not become a scientific law.
The right option is; B) multipotent
This kind of stem cell is multipotent stem cells
Multipotent stem cells are unspecialized cells that have the capacity to renew themselves by differentiating into multiple specialised cell types that has specific functions. Almost all adult stem cells are multipotent stem cells. Examples of multipotent stem cells can be found in the bone marrow where they differentiate, and develop to all blood cell types but not other cells.
Solar energy.
This is because the solar energy arrives and is trapped as radiation and heat.