Science Fourth Grade

It is a type of glacier.

• Ecosystem

• Lichen

• Biome

• Continental

They are made up of fallen snow.

• Glaciers

• Lichen

• Coral

• Tides

It is the scientific study of plants.

Write the 2 kinds of plankton.

A technique used by bats, dolphins and other animals to determine the

location of objects using reflected sound.

It is the most abundant metallic element in Earth’s

Process of collecting and processing materials that would otherwise be

thrown away.

They trap heat in the atmosphere and warm the planet.

It is used to create aluminum

metal.

It is a slowly moving mass or river.