Answer:
When answering someone professionally
Explanation:
Contrast: Insects may have entered a cool home and earthworms would have escaped to under the cool soil.
Compare: They both may have gone to a chilly area from their instincts.
Quotations, opinions, and predictions, whether directly quoted or paraphrased.
Statistics derived by the original author.
Visuals in the original.
Another author's theories.
Case studies.