Aquatic Ecosystems: Rivers & Streams

Earth is sometimes called "the water planet". As such, marine ecosystems have a significant impact on the planet. For example, through photosynthesis, marine algae consume carbon dioxide (CO2) from the atmosphere and produce over 50% of the atmosphere's oxygen. Additionally, the evaporation of water from oceans eventually provides the majority of precipitation-rain and/or snow.

3

Draggable item		Corresponding Item
Sediment		material deposited by water, wind, or glaciers
Erosion		geological process in which earth materials are worn away & transported by natural processes
Insect larvae		primary food source for fish

2

What are the 3 types of aquatic ecosystems?

1

What natural process below can add oxygen to water?

1

What are the 3 types of aquatic ecosystems?

What natural process below can add oxygen to water?

What prevents sediment & organic materials from building up in rivers & streams?