Most water pollution is the result of these human activities.
wastes produced by households, agriculture, and industry, mining
100
What is the major cause of ozone hole?
Group of gases called CFC's or chlorofluorocarbons.
100
What is leachate?
Leachate is formed when rainwater falls on a landfill where there are chemicals and mix with water and form polluted liquid.
200
________ is the removal of nonrenewable resources from the land
Mining
200
What is plastic made from?
When oil is refined to make gasoline and other petroleum products, solid materials called resins are left over which can be made into plastic.
200
What human activities have led to increased levels of carbon dioxide in the atmosphere?
The burning of coal and oil.
200
What is biodegradable material?
Any material that can be broken down and recycled by bacteria and other decomposers is considered biodegradable.
300
This causes the soil to be depleted and the area of the Earth may remain barren for years.
Strip mining
300
What are the three R's that are used to help control the amount of solid waste
Reduce, reuse and recycle
300
Why is heat considered a water pollutant?
Heated water can kill organisms living in the body of water.
300
Which gas is thought to be one of the causes of global warming?
carbon dioxide
300
What are two consequences of global warming?
Parts of Antarctic ice cap would melt, climate patterns would change causing more severe storms
400
What layers make up fertile soil?
litter, topsoil and subsoil
400
How does composting reduce household waste?
It reduces the amount of solid waste incinerated and added to landfills
400
Why is soil sediment considered a source of water pollution?
Soil sediments can cover up food sources of animals and block the light that plants need to grow
400
How does acid rain form?
The burning of coal and oil produce gases that react with water vapor in the air to form nitric and sulfuric acid that return to the Earth's surface dissolved in rain.
400
What gases in the atmosphere trap heat near Earth's surface?
Water vapor, carbon dioxide and other gases from emissions.
500
When the soil becomes less fertile a situation called _______ occurs.
nutrient depletion
500
What are three reasons to recycle glass?
It is less expensive than making it from raw materials, requires less energy, and reduces environmental damage from mining.
500
What are three key ways to keep water clean?
Proper sewage treatment, reduction of pollutants, and cleanup of oil and gasoline spills
500
What is drought?
When there is less than normal rain fall in an area.
500
What is the difference between ozone as a pollutant and ozone as a helpful gas?
The location of ozone gas. Ozone close to the Earth's surface causes smog, higher in the atmosphere people can't breathe it and it protects us from the sun's UV rays.