Material Changes That are Harmful to the Environment

Material Changes That are Harmful to the Environment

​Manila skyline with minimal air pollution

Open Ended

What do you think are the sources of pollution?

​The amount of space needed to transport the same number of people using buses, bikes, and cars

Pollution is the presence of harmful or toxic chemicals in the environment.

​Our daily activities that use and produce energy create pollution.

Our vehicles create carbon dioxide when they burn gasoline.

Carbon dioxide makes climate change worse.​

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​Pollution

Multiple Choice

What is pollution?

• It is when wase materials are disposed of properly.

• It is when energy is used efficiently.

• It is when harmful or toxic chemicals are present in the environment.

Multiple Choice

What is NOT a product of air pollution?

• soot and smog

• toxic chemicals

• greenhouse gases

• rain and snow

Improper waste disposal, oil spills, and acid rain can pollute the water.

Waste disposed in water becomes an environment for harmful bacteria to thrive in.​

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​Water Pollution

When trees are cut down indiscriminately, there will be no natural means to absorb excess rainwater or carbon dioxide.

The absence of trees can also cause landslides.

Most important of all, animals can lose their habitats.​

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Deforestation

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Open Ended

Why is it important for us to know the different sources of pollution?