I feel that it's the 1st one

The Colorado River carved out a deep canyon in the habitat of an Abert’s squirrel population. This is an example of which stage of speciation?

The populations become adapted to different environments and eventually become so different that they cannot interbreed to produce fertile offspring.

The populations are isolated and thus do not interbreed.

The populations become totally separated from one another.

The populations successfully interbreed.

Question

I feel that it's the 1st one

The Colorado River carved out a deep canyon in the habitat of an Abert’s squirrel population. This is an example of which stage of speciation?
    		

    The populations become adapted to different environments and eventually become so different that they cannot interbreed to produce fertile offspring.
    		

    The populations are isolated and thus do not interbreed.
    		

    The populations become totally separated from one another.
    		

    The populations successfully interbreed.

haaaow · Answer

@zzr0ck3r 
@zarkam21

haaaow · Answer

@kittiwitti1

kittiwitti1 · Answer

I'm studying for chemistry final

haaaow · Answer

dang

haaaow · Answer

i'm just trying to move up a grade

haaaow · Answer

anyway, thanks for coming here, i honestly just need help, i'll try to figure out the answer

haaaow · Answer

i just need a little extra understanding

kittiwitti1 · Answer

http://animals.mom.me/characteristics-abert-kaibab-squirrels-9132.html

kittiwitti1 · Answer

can't spend too much time sorry ! good luck

haaaow · Answer

ah it's ok, thanks for your time

haaaow · Answer

ayy this helpes out a lot.

haaaow · Answer

i just noticed i was given medal, my 2nd one, thanks.