Question

select the best definition for adaptive radiation.
○ factors or forces that prevent two species from producing fertile offspring together
○ one species becomes multiple new species adapted to fill different niches
○ speciation occurs due to physical isolation between two habitats
○ two species hybridize to the point where they form a new species

Explanation:

Adaptive radiation is a process in which one species evolves into multiple new species that are adapted to different ecological niches. The other options describe different concepts: factors preventing two species from producing fertile offspring are reproductive barriers (not adaptive radiation), speciation due to physical isolation is allopatric speciation, and two species hybridizing to form a new species is hybridization speciation.

Answer:

one species becomes multiple new species adapted to fill different niches