Population
Food Chain and Web
Symbiosis
100

What is a biosphere?

Parts of Earth that support life.

100
What is the main source of energy?

The sun.

100
What is a symbiosis?

Close relationships between organisms.

200

Name a major biome.

Aquatic, grassland, forest, desert, tundra.

200

What are photosynthetic organisms called?

Producers.

200

What is mutualism?

A relationship that both organisms benefit.

300

What is a non living factor called?

An abiotic.

300

What do consumers do?

Organisms that eat other organisms.

300

What is commensalism?

One organism is helped but the other isn't.

400

How many ecological levels are there?

6
400

What are decomposers?

Organisms that break down remains.

400

What is parasitism?

One organism benefits but the other is harmed.

500

What are the two middle levels?

Community and Ecosystem.

500

What are all the steps of the Food Chain?

First Step: Producers.

Second Step: Herbivores that eat plants.

Third Step: Carnivores and Omnivores.

500

Give an example of parasitism.

Ex. A mosquito and an animal.

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