Claim #2: Energy Flow and Ecosystem Dynamics

How is the energy from the salad used up in the body?

• It is used for movement, growth, and keeping the body warm

• It is stored in the air

• It is turned into soil

• It is lost completely

Which of the following best describes the flow of energy in an ecosystem as mentioned in the learning objective?

• Energy flows from the sun to plants, then to animals and humans

• Energy flows from animals to the sun

• Energy flows only between plants

• Energy does not flow in an ecosystem

What percentage of energy is transferred to the next level in an ecosystem?

• 100%

• 50%

• 10%

• 1%

What happens to most of the energy as it moves through each stage of the ecosystem?

• It is stored as fat

• It is lost as heat

• It is used for growth only

• It disappears completely

Why is the water cycle considered a cycle and not an energy flow?

• Because water is continuously recycled through different forms and locations

• Because energy is not involved at all

• Because water only moves in one direction

• Because water disappears after use

What role do decomposers play in the cycling of matter?

• They return nutrients to the soil.

• They produce energy for plants.

• They stop the cycling of matter.

• They use up all the nutrients.

How are energy flow and cycling of matter different?

• Energy flows in one direction and is lost, while matter cycles and is reused.

• Both energy and matter are lost from the ecosystem.

• Energy cycles and matter flows in one direction.

• Neither energy nor matter is reused.

Which vocabulary word describes an animal that eats only plants?

• Herbivore

• Carnivore

• Limiting factor

• Energy

What is the term for the amount of power or ability to do work that is transferred from one organism to another in a food web?

• Energy

• Limiting factor

• Carnivore

• Herbivore

According to the energy pyramid, which group has the most amount of energy?

• First level consumers

• Second level consumers

• Producers

• Third level consumers