Which stage is the middle 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 successfully interbreed .

Which sentence is an example of a strong conclusion to an autobiography? a. i stayed after school three days in a row to practice onstage in the auditorium. b. i knew i would have to practice all week to memorize my dance for the recital. c. after the recital was over, i knew practicing was worth it, and i was looking forward to my next big challenge. d. on opening night, i danced in front of a packed auditorium.

Identify the composition of oceanic and continental crystal rocks. in a model of earth’s interior, where would these rocks appear?

Explain why biological control methods are generally environmentally superior to chemical pest control methods.