National Geographic: Pollution and Its Impact

What are pollutants?

• Materials that are always visible

• Natural resources like water and air

• Harmful materials introduced into the environment

• Materials that benefit the environment

Which of the following is a natural source of air pollution?

• Plastic waste

• Exhaust from cars

• Volcanic ash

• Industrial waste

What is the primary cause of smog?

• Natural gas leaks

• Ocean currents

• Chemical reactions with sunlight

• Excessive rainfall

What is the main consequence of acid rain?

• Improved air quality

• Damage to forests and waterways

• Enhanced plant growth

• Increased fish population

What is the Great Pacific Garbage Patch?

• A large area of land pollution

• A collection of microscopic plastic particles in the ocean

• A natural reserve in the Pacific

• A type of air pollution

What is bioaccumulation?

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

• The process of recycling materials

• The natural decomposition of organic matter

• The reduction of greenhouse gases

Which gas is primarily responsible for the greenhouse effect?

• Oxygen

• Carbon dioxide

• Nitrogen

• Helium

What was the environmental impact of the Deepwater Horizon oil spill?

• Increased fish population

• Massive loss of marine life

• Improved water quality

• Reduction in oil prices

What is the main purpose of the Kyoto Protocol?

• To limit the emission of greenhouse gases

• To enhance agricultural productivity

• To increase global trade

• To promote tourism

What is the effect of light pollution on ecosystems?

• It reduces energy consumption

• It enhances plant growth

• It disrupts the natural day-night cycle

• It improves animal communication