fossil fuels are made up of organic remains and
are a major source of energy for many people.
from where does the energy in fossil fuels
originate?
a. burning
b. heat
c. sunlight
d. carbonization

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.