All of the above points are valid for fossils' contributions in understanding the process of evolution. They allow us to study the ancestry, we can see the homologous organs or structures, if fossils are well-preserved; different fossils can lead us to follow the cycles of the changes that occurred during macroevolutions, and fossils can be used to study different populations which had different body structures for surviving in different environmental conditions.
Cells were taken while she was being treated for cancer many years ago and these cells have been cultured in the lab ever since.
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The presence of a few PLATES
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Air pollution will increase due to increased use of fossil fuels and the amount of natural space will decrease as suburban areas increase.
B - They both use protein channels (I think so at least) they differ because active transports use a pump to leave the cell and it uses atp (cell energy).