North america accounts for approximately 5% if the population, but what percent of world energy consumption? a: 11% b: 21% c: 31% b: 41%

Explain why components that are naturally found in air can be considered air pollutants.

Bottle deposit programs are one way to encourage higher recycling rates. explain how they work

What are the similarities and differences in the way geologists and biologists approximate the age of the earth? justify your response in two or more complete sentences.