Your answer would be C, the study of biogeography includes information about the location of fossils and living organisms
a central vacuole is a cellular organelle found in plant cells
Im not so sure about this answer
Answer:
C.
Explanation:
A theory is not a guess but an explanation of <u><em>why</em></u> things happen.
The answer is A. They have a hydrocarbon backbone that can be chemically altered.
