Savvas Energy in Ecosystem

What is the starting point of energy flow in all ecosystems?

• The Earth

• The Moon

• The Sun

• The Stars

What role do decomposers play in an ecosystem?

• They consume only plants

• They break down dead organisms

• They are the top predators

• They produce energy from the Sun

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How do humans add a new energy source to urban ecosystems?

• By using solar panels

• By building more houses

• By throwing away food scraps

• By planting more trees

What might happen when a new species of fish is introduced to a lake?

• The native fish population decreases

• The lake becomes a desert

• The new fish species eats all the algae

• The native fish population increases

What is one effect of introducing a new fish species to a lake?

• It provides a new energy source for birds and frogs

• It makes the water cleaner

• It increases the number of native fish

• It stops the flow of energy