1
If people do not protect _______ animals, they may all die out.
endangered
_____ happens when wind or water move sand or small rocks.
erosion
Anything people can use to meet their needs is a _______
natural resource
a _____ is what is left of an animal or plant that lived long ago
fossil
What can people recycle
newspaper
a _____ is solid matter found in nature
minerals
one cause of water pollution is _____
oil spills
a hole in earths surface is a ____
volcano
fossils can be of _____
plants or animals
One way to save natural resources is t ____ or reuse them
reduced
scientists learn about extinct plants and animals from _____
fossils
minerals
a mountain can be
soil that is made up of things that were once living is called
humus
earth's crust can be changed by
weathering and erosion
clay can be
sticky when wet
you can help the environment by
reduce, reuse, and recycle
fossils of teeth can show us
what it ate
water is a
natural resource
the first step in a fossil is
an animal dying