Fresh And Saltwater Chapter 4 Flashcards
How do human beings affect the water supply? Power stations
power stations sometimes discharge warm wtaer into lakes and rivers that can kill some animals and encourage excessive plant growth.
How do human beings affect the water supply? Factories
might add dangerous chemicals to the water or practice thermal pollution, killing aquatic plants or animals. Some of these chemicals can cause tumours, birth defects, or make organisms unable to breed.
How do human beings affect the water supply? runoff from farmland
Runoff from farmland contains fertilizers that can cause excessive plant growth. It may also contain herbicides or pesticides that can kill animals and plants that grow in the water
How do humans beings affect the water supply? Runoff from city
Runoff from city streets contains large amounts of oil and other chemicals , including salt. These substances affect plants and animals
How do humans beings affect the water supply? Habitat destruction
Habitat destruction takes away the places that animals can live and plants can grow
How do human beings affect the water supply? Sewage
Sewage contains large amounts of nitrogen, which causes the number of micro-organisms to increase . If these micro-organisms use up the oxygen, fish will suffocate. Phosphorous in sewage promotes plant growth that can also change the whole ecosystem
How do human beings affect the water supply? Oil spills
Oils spills from ships can harm animals in,on, and near the water.
What are 7 examples of how humans affect the water supply
Power stations Factories Runoff from farms Runoff from cities Habitat destruction Sewage Oil spills
Water cycle
the water from the ocean,river or lakes evaporates and turns to clouds because of condensation then precipitations from clouds to rain and the cycle starts again
What are the three main uses of water
Industry 73%
Domestic 5%
Agriculture 22%
Use of Argucluture
It’s used in agriculture for irrigation to grow crops. Irrigation is important to the economy of many countries.
Use of Industry
Industry uses water as a coolant, as solvent, or washing, and diluting pollutants when releasing them into the environment.
Use of Domestic
Water for domestic use in developed countries like Canada is purified and piped into homes. In many developing countries,people do not have clean water piped into their home
Aral Sea
The aral sea was once one of the largest bodies of fresh water in Central America. Russian water diversion projects for growing cotton frained more water from the sea than the being replaced from the rivers flowing into the sea
Monitor
Monitor means to observe, check, or keep track of something for a specific purpose
