Fresh Water

By: Elijah Pape and Dante Valle

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Usually around big or large bodies of water. Can also be considered ponds and streams.

Large bodies of water would be lakes or rivers. Like the Mississippi River. How ever, this water only covers up 2% of all the water on Earth.


For precipitation it counts on geographic location of the freshwater source. On average precipitation is about 10-80 inches a year. Sometimes even a hundred inches.


Many different animals have learned to adapt to different areas. For instance, cat fish have learned to adapt to a more murky type of water, and trout in clear rivers and streams. There are three different regions for freshwater. The littoral zone, mostly for insects, insect eggs, and amphibians. The limnetic zone, mostly for freshwater fish. The profundal zone, mostly for heterotrophs, animals that eat dead organisms. Mammals live near water to catch their main food source. Many species of plants have adapted to water that's clear enough to let sunlight penetrate through.


Some of the more commonly variations are size, water, teeth, and scales. The size of some fish are greatly increased. The water changes from fresh to salty. Their teeth size are greatly increased in size. Also, last but not least is scales. Because scales are more stronger in salt water than fresh.


Adaptaion: an anatomical, physiological, or behavioral change that improves a population's ability to survive.

Variation: a difference between organisms of any species caused by genotypic or phenotypic variation.
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