Evolution is not the same as adaptation or natural selection. Natural selection is a mechanism, or cause, of evolution. Adaptations are physical or behavioral traits that make an organism better suited to its environment. Heritable variation comes from random mutations.
Evolution is not the same as adaptation or natural selection. Natural selection is a mechanism, or cause, of evolution. Adaptations are physical or behavioral traits that make an organism better suited to its environment. Heritable variation comes from random mutations.
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Evolution and natural selection review (article) | Khan
Category C animals are not
subjected to procedures that involve pain or distress or would be required to
use pain-relieving drugs. Routine procedures such as injections and blood
sampling from veins that produce only mild, transient pain or discomfort are
reported in this category.
