Energy Flow in Ecosystems

What do organisms in an ecosystem rely on each other for?

• To compete for resources

• To function and thrive

• To avoid predators

• To migrate to new areas

What is the base of the energy pyramid made up of?

• Primary consumers

• Tertiary consumers

• Secondary consumers

• Producers

How do primary consumers obtain energy?

• By photosynthesis

• By eating secondary consumers

• By feeding on producers

• By hunting tertiary consumers

What can happen if a basic resource becomes scarce in an ecosystem?

• The entire population can be affected

• Only predators are affected

• Nothing changes

• Only plants are affected

What might happen if a frost causes many plants to die off?

• Animals may migrate or die off

• New plants will grow immediately

• Animals will have more food

• The ecosystem will remain stable