Question

because most of the planet is covered in water. on land, there are vast regions of emptiness. do it! space objects are usually ________ a harmless b stationary c plentiful d explosive

Explanation:

Space objects like asteroids, comets, and meteoroids can pose risks to Earth and other planets, but in general, they are not constantly causing destruction. Most of the time they are moving through space without directly harming anything, so they are usually harmless. They are not stationary as they are in motion due to gravitational forces. They are not necessarily plentiful in the sense that they are not everywhere in huge numbers relative to the vastness of space. And they are not inherently explosive under normal circumstances.

Answer:

A. harmless