Grade: Grade 6 Subject: Science Unit: Ecology Lesson: 5 of 6 SAT: ProblemSolving+DataAnalysis ACT: Science

Concept Review

Review Questions

Question 1

What is a biome?

Question 2

Name the six major land biomes.

Question 3

What is the difference between a producer and a consumer?

Question 4

Define food web.

Question 5

What is biodiversity and why is it important?

Question 6

List three human activities that harm ecosystems.

Question 7

What is an invasive species?

Question 8

Explain the role of decomposers in an ecosystem.

Question 9

What determines which biome exists in a region?

Question 10

How does deforestation affect carbon dioxide levels?

Answers

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1. A large region with distinct climate, plants, and animals

2. Tropical rainforest, desert, grassland, temperate forest, taiga (boreal forest), tundra

3. Producers make their own food (photosynthesis); consumers eat other organisms

4. A network of interconnected food chains showing energy flow in an ecosystem

5. The variety of life in an area; important for ecosystem stability and resilience

6. Pollution, deforestation, overfishing, habitat destruction, climate change

7. A non-native species that causes harm to the ecosystem it enters

8. Break down dead organisms, returning nutrients to the soil

9. Climate (temperature and precipitation)

10. Trees absorb CO2; removing them increases atmospheric CO2