Food Chains
Food Webs
Ecosystems
Roles in an Ecosystem
Changes & Balance
100

This is the name for a sequence showing how energy moves from one organism to another.

What is a food chain?

100

A food web shows many overlapping ________ in an ecosystem.

What are food chains?

100

This is a community of living and nonliving things interacting in an area.

What is an ecosystem?

100

Animals that hunt other animals for food are called this.

What are predators?

100

When all parts of an ecosystem work together smoothly, it is called this.

What is balance?

200

This organism makes its own food using sunlight.

What is a producer?

200

If one species disappears, this can happen to the food web.

What is it becomes unbalanced or disrupted?

200

These are the nonliving parts of an ecosystem (like water, sunlight, soil).

What are abiotic factors?

200

Animals that are hunted and eaten by predators are called this.

What is prey?

200

This natural event can quickly change an ecosystem. 

 What is a natural disaster?

300

In a food chain: grass → rabbit → fox, this organism is the primary consumer.

What is the rabbit?


300

This term describes an animal that eats both plants and animals.

What is an omnivore?

300

These are living parts of an ecosystem.

What are biotic factors?

300

This organism eats only plants.

What is an herbivore?

300

If there are too many predators, this may happen to prey populations.

 What is they decrease?

400

This is the original source of energy in most food chains.

What is the sun?

400

In a food web, arrows show this.

What is the direction of energy flow?

400

A forest, desert, and ocean are examples of this larger ecosystem type

What is a biome?

400

This level of consumer eats primary consumers.

What is a secondary consumer?

400

This term describes how animals depend on each other for survival.

 What is interdependence?

500

This organism breaks down dead plants and animals and returns nutrients to the soil.

What is a decomposer? 
500

This would most likely happen if all the producers in a food web disappeared.

What is consumers would lose their food source and populations would decrease?

500

This happens when organisms compete for limited resources like food or water.

What is competition?

500

This type of organism helps recycle nutrients by breaking down waste and dead matter.

What is a decomposer?

500

Removing one species from an ecosystem can cause this chain reaction.

What is a ripple effect (or domino effect)?