Exploring Freshwater Biomes: Rivers and Streams

The video tutorial explores the differences between rivers and lakes, focusing on the characteristics of river systems, watersheds, and mountain streams. It discusses the adaptations of organisms in fast and slow-moving streams and highlights the ecosystems within rivers, including the life cycles of fish that migrate between rivers and oceans.

What is a watershed?

• A land area that drains into a river system

• A small body of still water

• A type of fast-moving stream

• A large lake

How do mountain streams differ from slower-moving rivers?

• They are found only in flat areas

• They have lower levels of dissolved oxygen

• They are cooler and often have water from snowmelt

• They are warmer and contain more silt

What adaptation helps organisms survive in fast-moving streams?

• Ability to anchor to the bottom

• Ability to swim against the current

• Ability to breathe underwater

• Ability to camouflage

Which of the following animals is commonly found in rivers?

• Seals

• Penguins

• Otters

• Dolphins

Why do some fish return to rivers from the ocean?

• To hibernate

• To lay eggs

• To escape predators

• To find food