Freshwater Biomes and Their Unique Ecosystems

The video discusses freshwater biomes, which make up only 2.5% of Earth's water. It covers the major types: rivers and streams, lakes and ponds, and wetlands. Each biome is characterized by its unique water flow, salt content, and biodiversity. Rivers and streams flow in one direction, while lakes and ponds are standing water bodies. Wetlands are saturated areas supporting diverse species. The video emphasizes the adaptation of plants and animals to low salt content in freshwater environments.

What percentage of Earth's water is freshwater?

• 5%

• 10%

• 1%

• 2.5%

Which of the following is NOT a type of freshwater biome?

• Ponds

• Lakes

• Oceans

• Wetlands

How many parts per thousand is the salt content in freshwater?

• 10

• 50

• 30

• 5

What is the main reason plants and animals in freshwater biomes cannot survive in saltwater?

• Different pH levels

• Lack of sunlight

• Temperature differences

• High salt concentration

What is the starting point of a river or stream called?

• Mouth

• Estuary

• Headwater

• Delta

What determines the speed of water flow in rivers and streams?

• Water temperature

• Presence of fish

• Amount of rainfall

• Slope of the landscape

How large can lakes and ponds be?

• Up to 100 square meters

• Up to 10,000 square meters

• Up to 500 square meters

• Up to 1,000 square meters

How long can some ponds hold water?

• A few days

• A few weeks or months

• A few years

• Indefinitely

Which of the following is a plant commonly found in wetlands?

• Pond lilies

• Cacti

• Bamboo

• Pine trees

What type of animals are commonly found in wetlands?

• Polar bears

• Amphibians and birds

• Marine fish

• Desert animals