Food Chains
Plant Growth
Decomposers
Matter Cycle
Ecosystems
100

A living thing that makes its own food.

What is a producer

100

Plants get most of the matter they need to grow from

these two sources.

What are air and water?

100

Organisms that break down dead plants and animals.

What are decomposers?

100

Anything that has mass and takes up space; it moves

through ecosystems.

What is matter?

100

A community of organisms interacting with each other

and their environment.

What is an ecosystem?

200

An Organism that gets its food by eating other organisms.

What is a consumer

200

The gas in air that supplies carbon matter used by

plants.

What is carbon dioxide?

200

The process in which dead material is broken down.

What is decomposition?

200

Matter moves between living things and the nonliving

What is environment?

200

A model showing many connected food chains.

What is a food web?

300

A model that shows who eats whom and how matter

moves between living things.

What is a food chain

300

The main source of energy that supports nearly every

food chain.

What is the Sun?

300

Two kinds of decomposers that help break down dead

matter.

What are fungi and bacteria?

300

When a salmon is eaten or decomposes, its matter can

eventually become part of another ____.

What is organism / living thing?

300

All food in an ecosystem can ultimately be traced back

to these organisms.

What are plants / producers?

400

An animal that hunts another animal for food.

What is a predator?

400

Evidence used in the plant-growth lesson to show that

plants gain matter.

What is an increase in weight (mass)?

400

Earthworms help release these back into the soil as

dead material breaks down.

What are nutrients?

400

Unlike energy, matter is repeatedly used again. We say

matter ____.

What is cycles?

400

This flows through food chains and originally comes

from the Sun.

What is energy?

500

If one species disappears, other organisms may

change because organisms are ____.

What is interconnected / dependent on one

another?

500

True or false: Most of a tree's new matter comes from

the soil.

What is false?

500

Decomposers are important because they help ____

matter instead of letting it disappear.

What is recycle?

500

Plants, animals, decomposers, and the environment

are all parts of this connected system.

What is an ecosystem?

500

Protecting an environment helps keep relationships

among organisms and resources in ____.

What is balance?

M
e
n
u