A. the products of photosynthesis serve as the reactants and cellular respiration to provide chemical energy.
Because photosynthesis produces oxygen and cellular respiration needs that oxygen to produce energy and carbon dioxide, the carbon dioxide is used to create energy and oxygen for the plant.
Answer : Option A) He is studying oxygen, which can also be found in proteins.
Explanation : A scientist is examining the role of an element found in fats and carbohydrates of living things. Oxygen is the element which makes up to 65% of human body mass. This is also found in proteins inside the body.
Blood is made in bone marrow !
three functions of skeleton muscle...
1) help in movement
2)help in carrying something
3) support skeletons
Indonesia
Philippines
Turkey
New Zealand
Mexico
Italy
Iceland
Us