When there is uncontrolled cell growth, mutations can cause cancer because of increasing cell division rates.
As the cancer cells grow, a tumor can start to form.
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Answer:
Pesticides are selected based on the target species, growth stage, and enviromental conditions prevalent in a region.
Explanation:
Knowing environmental conditions in a region when using a pesticide could prevent health risks to every type of living beings that abide there. Occupational exposure and pesticide residues in food and drinking water could be risky due to pesticide toxicity, the weather conditions, the adsorption on soil, among others.
<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.
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