Due to the short-term environmental change of a drought, much of the soil in an area can no longer support a species of wildflower. as a result, the plants now grow only in small regions within the area. which effect of an environmental change does this best illustrate? migration loss of habitat adaptation extinction

This change best illustrates the 3rd answer choice, Loss of Habitat.

The plants aren't migrating, but are rather only surviving in areas where there is enough moisture to support life. The wildflowers are not adapting to grow in dryer conditions, and the species is not going extinct, as there are still some areas where the plants can get enough moisture.

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B. ) Loss of Habitat

regulation of gene expression. gene expression can be regulated by various cellular processes with the aim to control the amount and nature of the expressed genes. these regulatory proteins bind to dna and send signals that indirectly control the rate of gene expression

explanation:

the answer to your question is:

c. complementary base-pairing