The fossil record shows that an organism is relatively unchanged for a long period of time, followed by several changes over a short period of time, followed by another period of stability. this provides evidence for which view of evolution?

a. biotic potential
b. monophyletic development
c. graduated speciation
d. punctuated equilibrium

D. punctuated equilibrium

Explanation:

Punctuated equilibrium refers to the process of evolution which includes two long periods of little or no change in the gene pool of population. These periods of stability are disturbed by a short active phase of rapid changes in the gene pool and appearance of adaptations in individuals of population. Hence, the organism showing two prolonged periods of stability in terms of evolution punctuated by short phase of changes represents punctuated equilibrium.

The correct answer is option D. "punctuated equilibrium".

Explanation:

Punctuated equilibrium is an evolutionary theory that states that a species stays in a long period of time without suffering any substancial change called "statis", followed by a short and rare period of dramatic changes called cladogenesis. Punctuated equilibrium states that evolutionary changes occur quickly and in separated periods of time. This theory of evolution contrast the theory of phyletic gradualism, which states that evolution occurs constantly and uniformly by gradual transformations.

climate change and pollution

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

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