other cells
Unequal sharing of electrons.
These three ideas seem to run together, so it's important that you are able to distinguish among them. The theory that organisms change over time is evolution. The mechanism by which organisms evolve is natural selection. Survival of the fittest explains how natural selection works.
Answer = Natural Selection
DNA
They developed their ideas around the year 1850.
Matter Matter is the term that defines as anything that has mass and takes up space.
Matter
Artificial Selection.