<span> (1) gene frequencies may be changed by migration, gene flow from another population. (2) in small populations, gene frequencies can be changed via random sampling -- this is known as genetic drift. (3) mutation pressure and (4) non-Mendelian segregation (meiotic drive) may also change gene pools. However, by far the most important agent of evolution is (5) natural selection, which operates by </span>differential reproductive success<span> of individuals.
</span>
The amount of woody areas do to human population destroying forests and etc
Answer: Cell apoptosis (cell death)
Explanation: p53 protein determines whether the DNA of a cell will be repaired or damaged when the DNA is affected by harmful agents (e.g. Radiation, toxic chemicals). If the DNA cannot be repaired the protein prevents the cell from dividing and signals the cell to undergo cell death, by this apoptosis of the cell, this stops the cell from undergoing mutation or division which then prevents the development of tumours.
Cellular respiration occurs in animals and plants
