Earth's magnetic poles reverse approximately every years? O A. billion
B. 22
C. 10 million
D. 250,000

D. 250,000 years

Explanation:

It's really 200,000 to 300,000 years, but 250,000 years is right in the middle, so it must be 250,000 years.

Hope this helps you! Good luck with your exam/quiz! <3

the answer for this question would be d. glaciers

the answer would be 2, if crossing over doesn’t occur 2 out of 4 of the daughter cells will have that allele.

hope this : )