The shape of the path of a planet or asteroid around the sun is an.

Ellipse

Explanation:

All orbits are elliptical, which means they are an ellipse, similar to an oval. For the planets, the orbits are almost circular. (Nasa.gov)

b.) plain  

hope this

1."lessen the worth of ."

2."increase the worth of."

3." beyond the worth of."

4."against the worth of ."