Pollution is when the air, water, or land becomes dirty and ____ to people, animals, and ____. Pollution can happen in many ____. Air pollution is when the air becomes ____ with smoke or ____ from cars, factories, or fires. Breathing in polluted air can make people ____. Water pollution is when lakes, rivers, or ____ become dirty with trash or ____. This can make the water ____ for animals to drink and swim in. Land pollution is when the ____ becomes dirty with trash or chemicals. This can ____ plants and animals that live there. Pollution is bad for the ____. It can make animals sick or even ____. Pollution also makes the air, water, and land dirty for people ____. We can help ____ pollution by throwing trash in the ____, using ____ plastic, and walking or biking instead of driving.

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