Lesson Check: Cycles of Matter in Ecosystems

respiration

transpiration

Water cycle

Oxygen-Carbon cycle

Nitrogen cycle

nitrogen

carbon

water

phosphorus

condensation

evaporation

precipitation

transpiration

Animals do not take in the nitrogen stored in the soil.

Bacteria change the nitrogen into a gas that the animals breathe.

Plants absorb the nitrogen from the soil and animals can eat the plants.

The animals can eat the soil and absorb the nitrogen through their digestive system.

1) Energy from the sun causes the water in the lake to evaporate. 2) Water vapor cools and condenses on dust particles forming clouds. 3) Water droplets combine in the clouds to form larger droplets. 4) Large water droplets fall to the ground from the clouds.

1) Water in the lake freezes and sinks to the bottom. 2) Water vapor rises and immediately turns into snow. 3) Water droplets evaporate directly from clouds. 4) Water in the lake turns into ice and floats.

1) Water in the lake is absorbed by rocks. 2) Water vapor forms without heat from the sun. 3) Water droplets split into smaller droplets in clouds. 4) Water in the lake disappears without precipitation.

1) Water in the lake is blown away by wind. 2) Water vapor condenses on the surface of the lake. 3) Water droplets form only at night. 4) Water in the lake is never part of the water cycle.

Animals take in the oxygen, but do not release gas as they use energy.

Animals take in carbon dioxide and use it to make food.

Animals take in oxygen and release nitrogen as waste.

Animals take in oxygen and as they use energy, carbon dioxide is released as waste.

runoff

groundwater

Precipitation

Transpiration

Evaporation

Condensation

Phosphorus cycle

Oxygen-Carbon cycle

Nitrogen cycle

Water cycle