Atmosphere
What gas do plants absorb during photosynthesis?
CO2
What pollution is caused by vehicle exhaust?
Air pollution
Name one greenhouse gas.
Carbon dioxide/methane/water vapor
What is recycling?
Reusing materials to make new products
Name one renewable energy source.
Solar/wind/hydroelectric
What is the greenhouse effect?
Trapping of heat by gases in Earth’s atmosphere
What is acid rain caused by?
Sulfur dioxide and nitrogen oxides
What human activity releases the most carbon dioxide?
Burning fossil fuels
What type of waste comes from nuclear power plants?
Radioactive waste
What energy source uses moving air?
Wind energy
Why is the ozone layer important?
It protects Earth from harmful UV radiation
What is runoff?
Water carrying pollutants into waterways
What is global warming?
Increase in Earth’s average temperature
What is a landfill?
Area designed to store waste
What are fossil fuels?
Coal/oil/natural gas
What gas makes up most of Earth’s atmosphere?
Nitrogen
Name one effect of water pollution.
Fish kills/algal blooms/unsafe drinking water
Name one effect of climate change.
Sea level rise/extreme weather/melting glaciers
What is hazardous waste?
Waste harmful to people/environment
What is one disadvantage of fossil fuels?
Pollution/greenhouse gases/nonrenewable
What gas makes up about 78% of Earth’s atmosphere?
Nitrogen
What is biomagnification?
Increasing concentration of toxins up the food chain
Why are scientists concerned about methane?
It traps more heat than carbon dioxide
Why is radioactive waste difficult to dispose of?
Long half-lives and dangerous radiation
Why is renewable energy important?
Reduces pollution and preserves resources