What is the difference between strucural and behavioral adaptation?

In the african savanna, more wildebeests are born than the environment can support. which is most likely to happen over a period of years as a result

Explain how ancient whale fossils found in eqypt are believed to support the theory of evolution.

Ascientist separates a population of mice into two groups. what would most likely increase the rate of speciation in this population. a. teach the two groups different tricks b. allow the two groups to breed with each other c. put the two groups in different environment d. have the two groups live in identical ecosystems