Protecting Earth's Resources

Why do we need to conserve water?

• It is an unlimited resource. 

• It is a limited resource. 

• There is a lot of water. 

• There is no need to conserve water.

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When conserving water, the 3Rs we need to remember are:

• Remove, Reuse, Recycle

• Report, Remove, Reduce

• Reduce, Reuse, Recycle

• Reduce, Reuse, Rethink

National parks and nature reserves...

• protect only the soil in an ecosystem

• clean your water supplies of harmful substances

• protect valuable ecosystems.

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When fertilizers run off farmland into streams and ponds, the nitrogen content of the water increases. This can lead to rapid growth of algae in a process called eutrophication. How can this process affect other organisms in the water?

• Oxygen is used up as algae is decomposed, reducing the amount available to other organisms.

• The water becomes better able to support aerobic organisms.

• The algae provide food for fishes and other organisms, leading to decreased algae populations.

• The extra nitrogen provides additional food for the other organisms, increasing their population.

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Less rainfall in an area and higher temperatures could lead to ____________.

• urbanization

• deforestation

• desertification

• higher pollution

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What are some reasons deforestation occurs?

• clearing land for agriculture, ranching, and mining

• just wanting to destroy things

• Population moving from rural areas to cities

• to make room for infrastructure

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How does an oil spill hurt the environment?

• causes cancer

• gets into the air

• kills birds and animals

• Makes the water dirty

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We should...

• turn off the tap

• turn off the lights

• leave the TV on

• throw away paper

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What should you do?

• save water

• waste water

Which factor can pollute the water?

• Air

• Temperature

• Waste

• Sunlight

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