Answer:
Size is the additional feature that determines asteroids.
Explanation:
Asteroids are small, rocky objects that orbit the sun. Although asteroids orbit the sun like planets, they are much smaller than planets. There are lots of asteroids in our solar system. Most of them live in the main asteroid belt which is a region between the orbits of Mars and Jupiter.
Answer:
Reasonable Second step- 
Explanation:
The given single step chemical reaction is as follows.
Suppose a two-step mechanism is proposed for this reaction,
The reaction occured in two steps they are as follows.
<h2><em>Solid. Because molecules densely packed it has a high resistance to flow thereby lower kinetic energy.
</em></h2>
That would be phosphorus. It’s electron configuration is 1s^2 2s^2 2p^6 3s^2 3p^3
