Front

What is the hydrosphere?

Back

All the oceans, rivers, lakes, and water on Earth.

Front

How do plants benefit animals?

Back

They provide oxygen and food for animals.

Front

Which sphere does oxygen belong to?

Back

Atmosphere.

Front

What is the primary source of food for animals and people?

Back

Vegetation.

Front

What are biotic factors?

Back

Living parts of an ecosystem.

Front

What is the atmosphere?

Back

The layer of gases surrounding Earth.

Front

What is the biosphere?

Back

The regions of Earth where life exists.

Front

What is the geosphere?

Back

The solid part of the Earth, including rocks and soil.

Front

What is photosynthesis?

Back

The process by which plants use sunlight to make food.

Front

What is an ecosystem?

Back

A community of living organisms and their environment.