Deforestation is most likely a result of the following
a. clearing massive areas of trees to plant crops
b. global warming
c. land slides
d. flooding

The air that we breath is made mostly of which gaseous molecule

Avolcano erupts next to a grassland area in a valley. a. describe three ways in which material released by the volcano could impact the grassland area. b. describe three ways in which the grassland ecosystem could recover after a volcanic eruption.

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?