How long has africa and north america moved Africa and North America are moving away from each other at a velocity (rate) of 3 cm/year. b) Africa and North America are presently 6000 km apart.

Africa and North America have moved away from each other for 2 × 10⁸ years.

Meaning they were right next to each other 200 million years ago.

Explanation:

Given,

- Africa and North America are moving away from each other at a velocity (rate) of 3 cm/year.

-Africa and North America are presently 6000 km apart.

Speed = distance/time

Time = distance/speed.

Distance = 6000 km = 6000000 m

Speed = 3 cm/year = 0.03 m/year

Time = 6000000/0.03 = 2 × 10⁸ years.

i think it's severe storms but i might be wrong

20: 5

explanation:

about 20% of the world's population lives in   southwest asia, but on less than 5% of the world's   land area.