1. About how much of solar radiation is intercepted by Earth? What portion of the solar energy intercepted by Earth is absorbed by the ground? 2. What is a greenhouse gas? Give three examples. 3....

1. About how much of solar radiation is intercepted by Earth? What portion of the solar energy intercepted by Earth is absorbed by the ground?

2. What is a greenhouse gas? Give three examples.

3. Distinguish between the natural greenhouse effect and global warming.