Natural Resources

A useful material found in nature is a _______.

• landfill

• natural resource

• compost

• plastic

Organic matter made from plant material and animal waste is ______.

• coal

• petroleum

• biomass

• sedimentary rock

To use carefully or to avoid waste is to ______.

• conserve

• develop

• fertilize

• decompose

A site for the disposal of waste materials is a ______.

• garden

• nature preserve

• biomass

• landfill

A sedimentary rock that developed from the remains of plants is ______.

• coal

• petroleum

• a mineral

• natural gas

A mineral's tendency to break along smooth, flat surfaces is ______.

• streak

• ore

• cleavage

• luster

Naturally occurring inorganic solids made up of one or more chemical elements are _______.

• biomass

• ore

• sedimentary rocks

• minerals

A naturally occurring rock from which useful materials can be extracted is ______.

• ore

• petroleum

• chemical element

• petroleum

A gas formed from microscopic marine and land organisms is _____.

• biomass

• petroleum

• natural gas

• coal

A mineral's color when it is crushed and powdered is _____.

• shiny

• streak

• cleavage

• luster