Which stage is the last stage of speciation?
a. the populations become adapted to different environments and eventually become so different that they cannot interbreed to produce fertile offspring.
b. the populations are isolated and thus do not interbreed.
c. the populations become totally separated from one another.
d. the populations interbreed successfully.

Cladistics is a way of classifying organisms by examining the characteristics of their ancestors and descendants and depicting the relationships in a cladogram. which of the following best describes a challenge in classifying organisms this way? a. there are millions of species on earth, and a cladogram is not a practical means for classifying all of them. b. it is impossible to tell which organisms are most closely related to each other using a cladogram. c. cladograms are detail-oriented and do not provide a useful understanding of evolutionary relationships. d. there is a limited number of ways to organize the information, so most cladograms end up looking very similar.

Describe the impact of deforestation of both abiotic and biotic factors within the tropical rainforest.

Why are some places regularly warmer or cooler than others in a given month