Which of these statements best explains how fossil records provide evidence to the scientific theory of evolution? . a. they show how natural selection happened on earth by chance.. b. they show how organisms choose to adapt to changing earth conditions.. c. they prove that structure and location of remains of organisms depict past events.. d. they prove that natural selection always leads to greater complexity in organisms.

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.