I think it's A
the cell membrane contain protein molecules
Red blood cells are responsible for the distribution of oxygen to other cells in the body.
Answer:
Darwinism is a theory of biological evolution developed by the English naturalist Charles Darwin (1809–1882) and others, stating that all species of organisms arise and develop through the natural selection of small, inherited variations that increase the individual's ability to compete, survive, and reproduce.
Explanation:
These organisms convert nitrogen in the soil to ammonia, which can then be taken up by plants. This process also occurs in aquatic ecosystems, where cyanobacteria participate. After nitrogen has been fixed, other bacteria convert it into nitrate, in a process known as nitrification.
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Photosynthesis is the opposite of cellular respiration.
glucose is converted into ATP during cellular respiration.
Light energy + Oxygen = Glucose
We breathout CO2 during the process of cellular respiration.
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