FLOW OF ENERGY

Because of Earth's cycles, organisms can use what over and over?

• phone booth
• materials
• plants
• food

Where do animals get nitrogen from?

• soil
• air
• water
• plants

Carbon is....

• the least common element in all living things.
• found only in the atmosphere and rocks.
• the most common element in all living things.
• is found mostly in dead things.

Organisms that do not decompose can be buried and become what?

• water
• nutrients
• air
• fossil fuels

How do fossil fuels get used in our environment?

• animals eat plants
• making fuel
• creating more fossil fuels
• given off during a flatulence

What is evaporation?

• a liquid changing to a gas
• animals breathing out condensation
• water vapor
• precipitation

What is the role of decomposers in the carbon cycle?

• breaking down fossil fuels to release carbon
• breaking down plants to release water
• breaking down food to release energy
• breaking down wastes to release carbon

On average, how much energy is lost between each trophic level?

• 0%
• 10%
• 90%
• 100%

What do the arrows represent in this diagram?

• Who is being eaten
• The flow of energy
• What things change into
• The decomposition of organisms

When water leaves a plant through small openings called stomata

• Precipitation
• Condensation
• Transpiration
• Perspiration