HMH Unit 4 Lesson 1

Front

What is a producer?

Back

A living thing that makes its own food.

Front

Why don’t plants grow in the deep ocean?

Back

There is not enough light.

Front

If there are 9,000 units of energy available from the phytoplankton, how much energy is available for the tuna?

Back

0.9

Front

What happens during the decomposition of a fallen log?

Back

The materials in the log are broken into smaller, simpler parts.

Front

What is the relationship between plants and animals?

Back

Plants and animals use the waste products from each other to survive.

Front

What is an energy pyramid?

Back

A diagram that shows the flow of energy through a food chain.

Front

What role do decomposers play in an ecosystem?

Back

They break down dead organisms and recycle nutrients back into the soil.

Front

What is photosynthesis?

Back

The process by which plants use sunlight to make food.

Front

What is the main source of energy for most ecosystems?

Back

The sun.

Front

What is a food chain?

Back

A sequence that shows how energy and nutrients flow from one organism to another.