Membranes control whats good or whats bad to get inside the cell, basically it allows good things to pass into the cell and bad things to stay out
the answer is 21<span>% oxygen, </span>
Answer:
They use the process of photosynthesis to transform water, sunlight, and carbon dioxide into oxygen, and simple sugars
Explanation:
Seeing that our species is constantly evolving, maybe it is starting to get more uncomfortable to walk on all fours.
the answer is differentiation
