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 is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.

i'll try what topic lol