G5 - Science - Q2

_____ is a mixture of minerals and organic material that covers much of Earth's surface

• Soil

• Rock

• Snow

• water

Which organism has a role of breaking down and recycle matter from dead plants.

• Earthworms

• Fish

• Iguanas

• Butterflies

What is the role of earthworms in soil ecosystem.

• Decomposer

• Predator

• Consumer

• Producer

In an ounce of soil, about how many bacteria are there?

• 100,000,000

• None of the above

• 1,000,000

• 10,000,000

the way expelled by earth worms

• consume

• network

• decaying

• microorganism

Carbon dioxide is the primary example of greenhouse gas.

• True

• False

Atmosphere is a thin blanket of water.

• True

• false

Greenhouse gases in the atmosphere absorb heat from the sun.

• True

• False

The atmosphere composed of a mixture of gases, primarily nitrogen and oxygen.

• True

• False

Plants use nitrogen from the air for the process of photosynthesis.

• false

• true