1. How do people affect the environment?
Danielle Ruff
3rd Grade

2. Uses of the Land The land people live on is a very important resource.
People use land in different ways.
Build on it
Make a building from it (rocks and wood are building materials from the land)

3. Uses of the Land Other resources come from the land.
Metals
Gemstones
Coal
These are all mined, or dug up, from the land.
Land can also be used for farming.
When people use the land, they change it in some way.
Building, mining, and farming all change the land.

4. Uses of the Land Sometimes the effects are good.
Example: planting trees helps keep the soil in place.
Sometime the effects are bad.
Example: mining can tear up the land. This harms the plants and animals that live in the area.

5. Land Pollution POLLUTION is any harmful material in the environment.
There are many types of harmful materials, or POLLUTANTS.
Solid waste, chemicals, noise, light

6. Land Pollution
LAND POLLUTION can happen when people throw trash away in the wrong places.
The trash can harm plants and animals.
It can also pollute the water under the ground.

7. Air Pollution
Smoke, mostly from trucks, cars, and factories, is one cause of air pollution.
Air pollution can make it hard to breathe.
Air pollution can also change the weather.
Air polluted by car and factory gases traps heat from sunlight. This makes Earth warmer. Scientist call this GLOBAL WARMING.
Air pollution can cause health problems.

8. Water Pollution
Pollution in the air and on the land can get into water when there is rain.
Rain washes pollutants from the air and land into the water.
People who dump trash, oil, and other pollutants into the water also cause water pollution.

9. Water Pollution Drinking polluted water can make people sick.
Animals that live in polluted water can also get sick.
Some kinds of water pollution can be cleaned up.
Water treatment plants can take pollutants out of water to make it clean again.