Understanding Ecosystems and Resources

What is an ecosystem?

• A large body of water

• A community of living organisms interacting with their environment

• A type of renewable resource

• A nonrenewable resource

Which of the following is an example of a nonrenewable resource?

• Solar energy

• Wind energy

• Coal

• Hydroelectric power

What is the primary source of energy for most ecosystems?

• Wind

• The Sun

• Water

• Fossil fuels

Which of the following is a renewable resource?

• Natural gas

• Oil

• Wind

• Coal

In an ecosystem, what is the role of producers?

• To consume other organisms

• To decompose organic material

• To produce energy from sunlight

• To store energy in the form of fat

Which of the following best describes energy transfer in an ecosystem?

• Energy is created and destroyed

• Energy flows from producers to consumers

• Energy is stored indefinitely

• Energy is only used by decomposers

What is the main disadvantage of using nonrenewable resources?

• They are expensive to extract

• They are unlimited

• They can be replenished quickly

• They can run out and cause pollution

Which of the following is an example of energy transfer in an ecosystem?

• A plant absorbing sunlight

• A rabbit eating grass

• A lion sleeping

• A rock sitting in the sun

What is the role of decomposers in an ecosystem?

• To produce energy from sunlight

• To break down dead organisms and recycle nutrients

• To consume producers

• To store energy in the form of fat

Which of the following is a benefit of using renewable resources?

• They are always available

• They produce a lot of pollution

• They are difficult to access

• They are non-recyclable