Question

which explanation best describes the biodiversity of the finches?
a. the finches migrated from different areas.
b. the finches adapted to different food sources.
c. the finches descended from different ancestors.
d. the finches adapted to different climates.

Explanation:

Darwin's finches (Geospiza) show diversity mainly due to adaptation to different food sources. They evolved from a common ancestor. Migration (A) doesn't explain diversity. They have a common ancestor (so C is wrong). Adaptation to food (like different beak shapes for seeds, insects etc.) is key, not climate (D is less relevant than B).

Answer:

B. The finches adapted to different food sources.