C. They help with gas exchange, and the air taking up the space is lighter than the cells that could be there instead. Also, only cells can carry out photosynthesis, not air.
Answer:
b plants are better at absorbing carbon from the aur than animals
Answer:
because when you do it on accident it is unintentional and scares you because you werent expecting it. but when you do it on purpose it wont hurt because your brain stops you from doing it so hard that it hurts lol
Explanation:
Answer:
human biology
Explanation: Human biology is the branch of biology that deals with human beings and human populations. It includes all the aspects of the human as an organism including genetics, ecology, anatomy and physiology, anthropology, and nutrition.