The correct answers are as follows:
<span>1) hydrogenous sediment
2)sand and gravel
3) They rapidly break down at surface temperatures and pressures.</span>
Elliptical and Spiral have some similarities, they both are huge and contain lost of dust and also they are held by gravitational forces.
The rock will continue to travel in a straight line with a constant velocity for ever... The reason is, once it leaves your hand there is no force acting on the rock, so it will just continue to move in a natural motion which is constant velocity.
It should be an Electrical conductor, since conductors allow for movement of electrons from one point to another.
I think answer is A. The Brightness of a Star
