12 Questions
Estuaries are important natural resources for what lives in the ocean.
True
Oceans cover more than 50% of the Earth's surface.
False
The sun supplies water near the surface of the ocean, supporting photosynthesis.
False
Most living creatures live at a depth of approximately 200 meters in the ocean.
False
Estuaries are ecosystems where water flows from rivers into oceans or seas.
True
The water in estuaries is less salty than ocean water, but more salty than river water.
True
The ocean is divided into zones, each affecting the organisms that live in it in the same way.
False
Living creatures near the bottom of the ocean are called swimmers.
False
Freshwater ecosystems include oceans and seas.
False
Ponds and lakes are home to green algae and water lilies.
True
Trout have streamlined bodies that help them swim with water currents.
False
Wetlands are areas where the water level is close to the soil surface most of the time.
True
Study Notes
Oceans
- Cover more than 50% of the Earth's surface
- Receive water from the sun near the surface, supporting photosynthesis
Estuaries
- Ecosystems where water flows from rivers into oceans or seas
- Water is less salty than ocean water, but more salty than river water
Ocean Zones
- Divided into zones, each affecting the organisms that live in it
Freshwater Ecosystems
- Exclude oceans and seas
- Include ponds and lakes, which are home to green algae and water lilies
Aquatic Organisms
- Most living creatures live at a depth of approximately 200 meters in the ocean
- Trout have streamlined bodies that help them swim with water currents
Wetlands
- Areas where the water level is close to the soil surface most of the time
Test your knowledge of freshwater ecosystems with this quiz! Explore the different biota and characteristics found in ponds, lakes, streams, rivers, and swamps. From algae-covered surfaces to the diverse plant and insect life, learn more about the fascinating world of freshwater ecosystems.
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