Energy flow in ecosystems.

What is the primary source of energy in most ecosystems?

• The Sun

• The Moon

• Wind

• Water

Which process do plants use to convert sunlight into food energy?

• Photosynthesis

• Respiration

• Digestion

• Fermentation

What type of consumer is a lion?

• Carnivore

• Herbivore

• Omnivore

• Decomposer

In an energy pyramid, which level has the most energy?

• Producers

• Primary consumers

• Secondary consumers

• Tertiary consumers

Why does energy decrease at each level of a food chain?

• Energy is lost as heat

• Energy is created

• Energy is stored

• Energy is gained