Food Chains & Food Webs
Types of Ecosystems
Adaptations
Living things Change Their Environments
Changes Affect Living Things & Living Things of the Past
100

An animal's home is its ________.

habitat

100

A ________ is an ecosystem with many trees.

forest

100

A _______ is a structure or behavior that helps an organism survive in its environment.

adaptation

100

A _______ is something that helps an organism survive.

resource

100

______ are the remains of organisms that lived long ago.

Fossils

200

A _________ shows how energy passes from one organism to another in an ecosystem.

food chain

200

_______ is the patteren of weather in a place over a long time.

Climate

200

________ animals are animals that are active at night.

Nocturnal

200

What are the 3 Rs?

Reduce, reuse, recycle

200

A ________ is all the members of one kind of organism in an ecosystem.

population

300

Are humans carnivores, herbivores, or omnivores?

omnivores

300

A _______ is an ecosystem with less than 25cm of rainfall.

desert

300

_______ is when one living thing imitates another in color or shape.

Mimicry

300

_______ is the struggle among living things for resources.

Competition

300

A ______ happens when there is no rain for a long time.

drought

400

Plants and algae are _________.

Producers

400

What are the names of the five oceans?

Atlantic, Pacific, Indian, Arctic, Southern

400

_______ makes an animal hard to see.

Camouflage

400

_______ happens when harmful materials get into the air, land, or water.

Pollution

400

What is the name of the hairy elephant?

woolly mammoth

500

What are 3 kinds of decomposers?

Worms, mushrooms, mold, insects, bacteria, snails, etc.

500

What is humus?

Broken-down plant and animal animals.

500

What is an animal that migrates?

Sperm whales and others

500

What are 5 resources?

Food, water, air, space, sinlight, shelter, etc.
500

A _______ is all the population in an ecosystem.

community