Two related species that live in the same area but mate during different seasons are separated by

How does the author's purpose in this passage differ from an author writing about her personal struggle living with asthma?

Need an answer asap 45 points and brainlest to the first person to answer why do scientific theories, such as biological and chemical evolution, represent the strongest explanation of the changes observed in the fossil record. must be in sentence form how can scientific theories on evolution and the fossil record change over time? must be in sentence form

Ascientific idea becomes valid when it is what?