Water Pollution

Untreated sewage is released into the environment. What type of pollution would this cause?

• Bacterial

• toxic

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NGSS.MS-LS2-4

NGSS.MS-ESS3-3

Why do algae blooms happen?

• there are too many nutrients in the water

• there are too many fish in the water

• there is not enough turbidity in the water

• all of these options

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NGSS.MS-LS2-3

what is true about eutrophication in lakes and other bodies of water?

• it is always natural

• it is always artificial

• it can cause too much algae to grow

• none of these are true

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NGSS.MS-LS2-4

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Which of the following is mainly responsible for the causes of water pollution?

• a) Afforestation

• b) Oil refineries

• c) Paper factories

• d) Both b and c

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NGSS.MS-ESS3-4

Which of the following are the primary causes of water pollution?

• Plants

• Animals

• Human activities

• None of these

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NGSS.MS-ESS3-3

What are the main sources of water pollution in India?

• a) Municipal sewage

• b) Bathing

• c) Industrial discharge

• d) Both a and c

What is this picture about?

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NGSS.MS-LS2-4

This is a _______________________ water body.

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NGSS.MS-LS2-4

During the Exxon oil spill, many marine animals were killed. Why?

• The oil spilled into the ocean and poisoned the animals food.

• The animals drank the oil from the ship's tank.

• The oil was absorbed by the ocean.

• Marine animals were not killed because they swam to safety. 

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NGSS.MS-LS2-4

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Why is plastic dangerous for marine life?

• They mistake it for food and cannot digest it

• They can get entangled in it which hinders their ability to swim

• It is not dangerous because they use plastic waste for habitats

• Both a) and b)

• Both a) and c)

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NGSS.MS-LS2-4