A chuck of an asteroid that has broken off in outer space is called?

Answer :A chunk of an asteroid that has broken off in outer space is called a meteoroid

Explanation:

A piece of an asteroid is still an asteroid, until you get down to pretty small. Then it's called a meteoroid

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.