Exploring Freshwater Ecosystems: Lakes, Rivers, and Wetlands

The video explores freshwater biomes, which make up only 2.5% of Earth's water. It covers the characteristics of rivers, streams, lakes, ponds, and wetlands, highlighting their low salt content and unique ecosystems. Rivers and streams flow in one direction, while lakes and ponds vary in size and duration. Wetlands, including marshes, swamps, bogs, and fins, are saturated with water and support diverse wildlife. The video concludes with an invitation to explore more resources.

What percentage of Earth's water is freshwater?

• About 10%

• About 50%

• About 75%

• About 2.5%

Which are not types of freshwater biomes?

• Lakes

• Rivers

• Deserts

• Streams

What is the salt concentration in freshwater?

• 1 part per thousand

• 0.5 parts per thousand

• 30 to 50 parts per thousand

• 100 parts per thousand

What determines the flow direction and speed in rivers and streams?

• The width of the river

• The slope of the landscape

• The depth of the water

• The temperature of the water

What happens when the slope is steep in a river?

• Water evaporates faster

• Water becomes stagnant

• Water flows quickly

• Water flow reverses

What is a characteristic feature of ponds?

• They may exist temporarily

• They are always large

• They contain saltwater

• They are deeper than lakes

Which type of wetland is known for having trees?

• Marshes

• Swamps

• Fens

• Bogs

What type of animals might you find in a marsh?

• Sharks and whales

• Camels and lizards

• Eagles and hawks

• Frogs and snakes

Which wetland type is peat-producing?

• Swamps

• Lakes

• Marshes

• Bogs and fens

What encourages the growth of moss in certain wetlands?

• High salt content

• Presence of large trees

• Flowing water

• High peat content