2G Unit C Our Earth Chapter Test B (2nd)

Harmful waste on land, in the air, or in water makes ................ A) pollution B) litter

Bits of rock, rotting plants, minerals, and sand form .................. A) compost B) soil

All living things will ...................... after they die. A) decompose B) conserve

Why do plants not grow well in subsoil? A) It does not have nutrients B) It is full of rocks and stones

People can ................... waste by cutting back on the things they use. A) reuse B) reduce

All ........................ are made up of minerals. A) rocks B) compost

Which are examples of minerals? A) clay and sand B) oil and coal

How can you tell if something is a natural resource? A) It comes from Earth B) It turns into compost

People ...................... when they use something again. A) reuse B) reduce

What provides the nutrients in compost? A) bits of clay and sand B) decomposing food

Tossing papers on the ground causes................ A) litter B) compost

What should people do before they throw something away? A) see if it can be reused first B) find a secret place to put it

When food scraps decompose, they form ................. A) compost B) conserve

People ....................... when they use old things to make something new. A) reduce B) recycle

To save resources for future use is to ................ A) conserve B) reuse