This represents the anaerobic part of cellular respiration, this specifically would represent the Krebs cycle. I highly doubt that they want you to be that specific, so Cellular respiration
An important part of photosynthesis is light thus the answer would be : <span>Sunlight provide light energy that allow photosynthesis to occur in plankton and aquatic plants.</span>
Weathering breaks down and loosens the surface minerals of rock. Hence, the broken rocks are transported to another place where it decomposes and forms soil. Therefore weathering is important for soil formation
<span>Errors during mitosis. Mitosis is strictly used for growth and replacement of cells within the organism itself in animals, as traits are passed on via cell division by meiosis.</span>
The atria of the heart merely need to allow blood to flow into the ventricle, and therefore aren't very muscular.
The ventricles of the heart need to actually pump blood to the rest of the body, whether to the lungs or the the rest of the body.
