In the year 1850, Rudolf Virchow was studying cells under a microscope, when he observed that cells were dividing and forming new cells. Realizing what he had observed, he understood that living cells reproduce new cells through division. Basing on his conclusion and realization, Virchow proposed that living cells came only from the other living cells.
Answer:
Genes, chromosomes, and nucleus
The sled with a rough metal bottom would take more force to move over ice, because the rough surface would increase friction and the force needed.
Liver problems. Failing liver. Something with the hippocampus getting smaller, which will cause your memory to leave you.
Patterns incidence distribution and possible control of diseases as well as other factors pertaining to health
