Answer:
Nucleic acids are the most important macromolecules for the continuity of life. They carry the genetic blueprint of a cell and carry instructions for the functioning of the cell.
An energy pyramid is always related to the organisms food web. A increase in no of tropic levels could make it complex. Also the reason for only 4 or 5 is to make it simple to understand.
After the solar cycle takes place, bigger sun spots appear, flares appear, and the solar radiation changes.
If this doesn't answer your question, I'll try again. If there are options feel free to comment them as it can narrow down my choices.
Have a good day!
If a moving object loses mass, how can it keep its momentum constant?
A. by speeding up
Answer:
I think I it is selective breeding also known as artificial selection
