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By: 4 th Period student

Freshwater. By: 4 th Period student. Types of Freshwater. There are all sorts of freshwater habitats including lakes, ponds, rivers, streams, swamps, bogs, and marshes. Freshwater ecosystems are always found in a watershed.

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By: 4 th Period student

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  1. Freshwater By: 4thPeriod student

  2. Types of Freshwater • There are all sorts of freshwater habitats including lakes, ponds, rivers, streams, swamps, bogs, and marshes. • Freshwater ecosystems are always found in a watershed. • Swamps, bogs, and marshes support certain types of plants and animals, prevent floods, retain sediments, and purify drinking water.

  3. Freshwaterhabitat life • Insects, amphibians, some birds, and crustaceans can all be found in freshwater habitats. • Freshwater habitats also contain 12% of the world’s unknown animals and about 40% of the fish species. • At least 20% of freshwater species are endangered or extinct. • Things such as acid rain can result in a decrease of fish, aquatic plants, and microorganisms. • Freshwater plants and algae also provide oxygen and food. • Some other animals such as bull frogs, beavers, piranhas, and dragonflies inhabit freshwater habitats too.

  4. Freshwater on\in Earth • Only 3% of Earth’s supply of water is freshwater, the other 97% is salt water such as oceans. • About 30% of the Earth’s supply of freshwater is ground water, 69% is permanent ice (glaciers) and the other 1% can be found in other freshwater bodies (lakes, ponds, rivers, streams, creeks, bogs, marshes, and swamps), in the atmosphere, in the soil, and in biological organisms.

  5. Freshwater Uses • Rivers, streams, lakes, and reservoirs are mainly used for drinking water, and irrigation. • Groundwater can be used for irrigation, drinking water, and supplying domestic water to people who do not receive public-supply water.

  6. Freshwater being polluted • People used to think that water was limitless and would easily absorb anything that was thrown into it (garbage, oil, etc.). • Then, in 1969, all the trash in the Cuyahoga River in Cleveland caught fire and produced five story high flames. • It even burned down two bridges there too. • After that, people started to care more about freshwater and they started to take care of it more but even today freshwater bodies of water are still being polluted. • When there is an oil spill, it can contaminate our drinking water and is very hard to clean up and very expensive too. • In some places, rivers are even too polluted to be used for industry much less anything else. • Places like this include Poland and Czechoslovakia. • Some of these rivers lead to larger streams that pollute other areas and so on and so forth.

  7. Industrial Uses for Freshwater • Some river water is used to supply electricity and water to cities. • That water used to supply electricity and water to cities is about 70% of the total used water in the world and more than half of it is wasted. • It can also provide energy through hydropower.

  8. How You Can Help Freshwater Ecosystems • Some ways you can help freshwater ecosystems are: • Resistance to wetland development, • Efficient agricultural use of water, and • Switching to solar and wind energy from a hydroelectric dam.

  9. How Freshwater Helps Us Survive • Freshwater helps us survive by: • Keeping us hydrated when we are out in the sun too much and get thirsty, • Helps us digest our food more smoothly, • Transport waste away from our bodies, and • Controlling our body temperatures’

  10. LAKES, PONDS, RIVERS, STREAMS, AND THE DEFINITION OF FRESHWATER • Lakes and ponds are surrounded by land. • Rivers and streams carry freshwater from land (such as mountains) to the ocean. • Freshwater- Water containing less than 1,000 milligrams per liter of dissolved solids, most often salt.

  11. Water Diseases • There are many waterborne diseases such as… • Amoebic and bacillary dysentery • Hepatitis • Yellow Fever • Cholera • Typhoid fever and • Malaria • Three quarters of all human disease is related to organisms spread by polluted water.

  12. Lake Baikal • Lake Baikal is in Siberia and it is 12,200 square miles. • It holds up to 80% of the Soviet Union’s freshwater and 20% of Earth’s supply of water • Lake Baikal holds some fish and aquatic plants only native to it such as the only freshwater seal (the Baikal nerpa)

  13. Summary Slide • Freshwater ecosystems are everywhere and all around us and we need to protect them. • There are many animals and wildlife there too and water is wasted and polluted too much.

  14. Citation • http://environment.nationalgeographic.com/environment/habitats/freshwater-profile.html • http://www.eoearth.org/article/freshwater • Clean Water By: Karen Barss

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