Question

How is Earth just the right size to support life?

Please select all that apply.
1.If Earth were much smaller than it is, it would not retain water, oxygen, or an atmosphere
2.If Earth were much smaller than it is, it would have a thick atmosphere of ammonia and methane
3.If Earth were smaller than it is, it would not have been able to retain the free oxygon in the atmosphere that allowed the first organisms to come into being
4.If Earth were larger than it is, its gravity would be higher, and it would not retain water, oxygen, of an atmosphere
5.If Earth were larger than it is, its gravity would be higher, resulting in a thick atmosphere of ammonia and methane

Answer 1

1, 3 and 5 are true.

Step-by-step explanation:

A smaller planet doesn't have the gravity to hold and atmosphere (with oxygen) or water. A larger earth would hold a thicker atmosphere, which would contain more ammonia and methane.