Answer:
Explanation:
1. a. Sunlight hitting the Earth's surface is the source of all energy in the pyramid.
b. 25,500 kcal is provided by this source to a square meter per year.
A, as with all organisms, growth is always the primary result of cell division, the mitosis type, meiosis cell division results in gametes (sperm and eggs)
The part of the brain that performs that function is the hypothalamus.
The answer is b because it is negative on our world
The generalization that all organisms are composed of cells was established through multiple observations in various kinds of animals and plants. A controlled experiment of finding cells in all the kinds of living organisms is not possible or is infeasible as it will require prior knowledge of all the kinds of organisms inhabiting Earth and the effort to catch and bring them in the controlled environment of the lab for testing.