Name__________________________________________ Date ______________ Class period _____

Quiz Review 4.4 Ecosystems and biotic relationships

Complete the following questions on a separate sheet of paper.

1. Describe the characteristics of an ecosystem.
2. Explain what could cause global climate changes on the earth?
3. What are the four basic atmospheric components?
4. Explain how atmospheric pressure and wind affect ecosystems?
5. Explain the difference between weather and climate.
6. Describe how the atmosphere is heated and what is ultimately responsible from keep the planet out of another ice age.
7. What do the four laws of ecology say about the planet we live on today?
8. What is the biggest impact humans have had on this planet?
9. How is energy used in an ecosystem?
• What are the different trophic levels?
• How is energy and trophic levels connected?
10. What is the difference between a food web and a food chain?
11. Draw a food web.
12. Draw an energy pyramid and a biomass pyramid.
13. Describe the relationship between predator and prey and how they are part of the ecosystem.
14. Give examples of different types of symbiosis.
15. Compare and contrast population density, carrying capacity and biotic potential.
16. Use r = n-m to calculate the actual growth rate of an organism in nature.