What is the other term for “habitable planet”?

What is the protective layer of the earth that shields us from UV radiation?

How far is the Earth from the sun (in million km.)?

What factor enables us to have liquid water and an environment that supports life?

What factor enabled water in different states to exist?

What is term described as the change in the characteristics of an organism as it adjusts to its changing environment?

What factor which gives radiant energy to plants?