ecosystem
food chains and webs
human impact
energy flow
100

What is a community in an ecosystem?

  1. All the different populations that live and interact in the same area.
100

 What is the role of a consumer in a food chain?

Consumers eat other organisms to gain energy

100

What is one negative effect of pollution on ecosystems?

It can poison wildlife and disrupt food chains.

100

What are primary producers?

Organisms like plants and algae that make their own food using sunlight.

200

What is a biotic factor?

A living component of an ecosystem, like animals, plants, or bacteria.

200

What is a secondary consumer?

An organism that eats primary consumers (herbivores).

200

What is one benefit of protecting wetlands?

 Wetlands filter water, reduce flooding, and provide habitats for wildlife.

200

Why is less energy available to top predators?

 Energy is lost as heat at each step of the food chain.

300

What is an organism’s role called in an ecosystem?

A niche.

300

What do decomposers do in a food web?

Break down dead organisms and recycle nutrients into the ecosystem.

300

What is habitat fragmentation?

The breaking up of ecosystems into smaller pieces, harming species survival.

300

What is a food web?

A network of interconnected food chains showing how energy moves in an ecosystem

400

What is an example of an abiotic factor?

Temperature, water, sunlight, or soil

400

What do all arrows in a food web or chain represent?

The flow of energy from one organism to another.

400

How do invasive species harm ecosystems?

They outcompete native species and disrupt the balance of the ecosystem.

400

How is energy passed in an ecosystem?

Through feeding relationships between producers and consumers

500

What makes an ecosystem stable?

  1.  Balanced interactions among organisms and resources, and high biodiversity.
500

What is the difference between a scavenger and a decomposer?

Scavengers eat dead animals; decomposers break down dead matter on a microscopic level.

500

What is conservation?

The protection and preservation of natural environments and wildlife.