Human Impact on the Environment
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What you will learn
- 1Identify actions that harm and actions that help the environment
- 2Explain what Reduce, Reuse, and Recycle each mean
- 3Name one personal action that helps the environment
Mini Lesson
Everything people do — driving a car, throwing away trash, turning on a light — affects the natural world around us. That effect is called our human impact on the environment. It can be harmful or helpful. The good news is that we can choose to help!
How humans harm the environment
- Pollution — releasing harmful substances into the air, water, or land. Car exhaust, factory smoke, and litter are all forms of pollution.
- Deforestation — cutting down large areas of forest to make farmland or build roads, destroying habitats for animals and plants.
- Burning fossil fuels — burning coal, oil, and gas to make energy releases gases that trap heat in the atmosphere, warming the planet.
- Wasting water — leaving faucets running or watering gardens during rain uses more fresh water than the planet can easily replace.
How humans help the environment
- Reduce — use less in the first place (shorter showers, fewer single-use items).
- Reuse — use something again instead of throwing it away (refillable water bottle, cloth bag).
- Recycle — sort waste so materials like paper, glass, and plastic can be made into new things.
- Planting trees — trees absorb carbon dioxide, provide oxygen, and restore animal habitats.
- Saving energy — turning off lights and unplugging devices uses less electricity.
- Picking up litter — stopping trash from reaching rivers and oceans protects wildlife.
Words to know
Human impact
The effect that people’s actions have on the natural world — can be harmful or helpful
e.g. pollution hurts; recycling helps
Pollution
Harmful substances released into the air, water, or land
e.g. factory smoke, litter, car exhaust
Deforestation
Cutting down large areas of forest, destroying habitats
e.g. clearing trees to build roads
Fossil fuels
Coal, oil, and gas — burning them releases heat-trapping gases
e.g. gasoline and coal
Reduce
Use less of something in the first place so less waste is made
e.g. take a shorter shower
Reuse
Use an item again instead of throwing it away
e.g. a refillable water bottle
Recycle
Sort used materials so they can be made into new products
e.g. put glass jars in the recycling bin
Conservation
Protecting and caring for the natural environment
e.g. planting trees, saving water
Ask yourself: Can I give one example of an action that harms the environment and one that helps it? What do the three Rs stand for?
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