Body temperature in humans is kept fairly constant by automatic responses controlled by the A. Hypothalamus.
The answer is: The sun is called the ultimate source of energy because it is the source of almost all energies of the earth. Plants convert light energy from the sun into chemical energy (food) by the process of photosynthesis. Animals eat plants and use that same chemical energy for all their activities.
Anaerobic respiration, Ethyl alcohol fermentation, and Lactic acid fermentation
I think it would be vascular
When a cell divides it makes two whole new cells this process is called mitosis.
