National Geographic: Pollution Article

What are pollutants?

• Natural resources like water and air

• Harmful materials introduced into the environment

• Materials that decompose quickly

• Materials that benefit the environment

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Which of the following is a natural pollutant?

• Industrial runoff

• Carbon monoxide from cars

• Plastic waste

• Volcanic ash

What is the Great Pacific Garbage Patch?

• A large landfill in the Pacific Ocean

• A collection of microscopic plastic particles in the ocean

• A coral reef affected by pollution

• A natural reserve in the Pacific

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What is smog primarily composed of?

• Nitrogen oxide, sulfur dioxide, and hydrocarbons

• Water vapor and dust

• Carbon dioxide and methane

• Oxygen and nitrogen

What is acid rain?

• Rain that helps plants grow

• Rain mixed with pollutants like nitrogen oxide and sulfur dioxide

• Rain that is naturally acidic

• Rain that contains high levels of oxygen

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What is the primary cause of global warming?

• Increased greenhouse gases from human activities

• The natural greenhouse effect

• The ozone hole over Antarctica

• Natural volcanic eruptions

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What is ocean acidification?

• The process of oceans absorbing more carbon dioxide

• The process of oceans becoming more alkaline

• The decrease in ocean temperature

• The increase in ocean salinity

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What is a major source of water pollution?

• Rainwater

• Fertilizers used in agriculture

• Evaporation from lakes

• Natural springs

What is bioaccumulation?

• The increase in biodiversity in an ecosystem

• The natural decomposition of organic matter

• The buildup of chemicals in each level of the food web

• The process of plants absorbing sunlight

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What is the main danger of CFCs?

• They are a source of noise pollution

• They contribute to global warming

• They cause acid rain

• They damage the ozone layer