Description : (a) Asteroids (b) Black Hole (c) Aurora (d) Sedimentary Rock (e) Epiphytes (f) Ionosphere
Last Answer : a. Asteroids Asteroids, also called minor planets or planetoids, are a class of astronomical objects. The asteroid is a small celestial body that drift in the solar system in orbit around the ... . It plays an important part in atmospheric electricity and forms the inner edge of the magnetosphere.