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

What is true about all natural resources? ............ A) They come from Earth B) They take years to form

Bits of dead plants and animals make up .................... A) compost B) soil

How can people cut back on garbage? A) They can reuse things over and over B) They can toss their trash in the ocean

How does compost make soil healthy? A) It adds nutrients to the soil B) It adds minerals to the soil

To ................. something is to save it for future use. A) conserve B) recycle

Where do plants grow best? A) in subsoil B) in topsoil

To save water, people should .................. the amount they use. A) reduce B) recycle

Rocks are made of .................... A) minerals B) compost

What are mica and quartz? A) minerals B) soil

Once living matter dies, it starts to .................... A) decompose B) litter

Making new things out of old things is how people ............. A) recycle B) reduce

Pieces of rotting plants and animals are important parts of ................ A) compost B) pollution

Living and nonliving things can be hurt by.......... A) pollution B) minerals

Garbage that people leave behind is called............... A) compost B) litter

Different kinds of minerals make up ................ A) soil B) rock