Exploring Energy Flow in Ecosystems

What is the ultimate source of energy for all life on Earth?

• The Moon

• The Sun

• The Wind

• The Ocean

Which organisms are capable of making their own food?

• Decomposers

• Animals

• Fungi

• Producers

What term is used for animals that eat only plants?

• Herbivores

• Omnivores

• Decomposers

• Carnivores

Which type of consumer can be either a primary or secondary consumer?

• Herbivores

• Omnivores

• Decomposers

• Carnivores

What role do decomposers play in an ecosystem?

• They eat only plants

• They produce their own food

• They are at the top of the food chain

• They break down dead organisms and recycle nutrients

In a food chain, what does a secondary consumer eat?

• Primary consumers

• Producers

• Tertiary consumers

• Decomposers

What happens to a fox when it dies in a food chain?

• It is decomposed by bacteria or fungi

• It is eaten by herbivores

• It turns into a primary consumer

• It becomes a producer

What is created when food chains crisscross?

• A food cycle

• A food network

• A food pyramid

• A food web

Approximately what percentage of energy is transferred from one level of a food chain to the next?

• 5%

• 10%

• 20%

• 50%

What does the wider part of the energy pyramid represent?

• The energy lost

• The middle amount of energy

• The least amount of energy

• The greatest amount of energy