Science Exam

Select the correct process that cleans the air.

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Does lightning helps to clean the air?

• Yes, it does.

• No, it doesn´t.

What is the Ocean called?

• Food of the earth

• Lungs of the earth

• Purifier of the fire

The ocean produces over _________________ worlds oxygen.

• 50%

• 75%

• 90%

• 24%

The plants on the ocean cleans the air as the plants on the surface.

• True

• False

The ocean cleans the air during the night.

• The ones that clean the air during the night are the Trees.

• The ocean is the one that cleans the air during the night.

The plants cleans the air with:

• The roots

• The leaves

• The sun

• The air

The waves and the wind helps to clean the air on the ocean?

• True

• False

The _________ and the _____________ also helps clean the air on the ocean

• algaes and sea plants

• rainforest and trench

• Wind and dust

All of the plants can´t clean the air?

• True

• False