Interplanetary Material

Interplanetary material

A) falls on Earth at the rate of several hundred tons per day, mostly as micrometeoroids.
B) occasionally hits Earth in the form of fairly large objects that form craters, but there is no continuous stream of incoming matter.
C) hits Earth at specific times of the year in the form of small particles that produce meteor showers, but interplanetary material does not fall on Earth at other times.
D) falls on Earth only very rarely in the form of single large objects, but these individual impacts can devastate parts of Earth and threaten life.