This video provides an overview of freshwater biomes, which make up only 2.5% of Earth's water. Major types include ponds, lakes, rivers, streams, and wetlands. Organisms in these biomes are adapted to low salt content, as freshwater contains only about 5 parts per thousand salt compared to 30–50 in saltwater.
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Rivers and Streams: Water flows in one direction from the headwater to the mouth. Flow speed depends on the slope; faster water prevents buildup of organic materials.
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Lakes and Ponds: These are standing inland water bodies, varying in size and permanence. Some ponds may be seasonal, while lakes can be hundreds of years old.
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Wetlands: These saturated areas (marshes, swamps, bogs) support diverse aquatic plant life like cattails and willows, and host many species of amphibians, reptiles, and birds.
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