Download Unit 1 – Introduction to Environmental Science

Unit 2 - Ecology
Chapters 4-5
pg 98-151
Vocabulary:
Ecosystem
Biotic factor
Abiotic factor
Organism
Species
Population
Community
Habitat
Natural selection
Evolution
Adaptation
Artificial Selection
Resistance
Archaebacteria
Eubacteria
Fungus
Protist
Gymnosperm
Invertebrate
Vertebrate
Photosynthesis
Producer
Consumer
Decomposer
Cellular respiration
Food chain
Food web
Trophic level
Carbon cycle
Nitrogen-fixing bacteria
Nitrogen cycle
Phosphorous cycle
Ecological succession
Primary succession
Secondary succession
Pioneer species
Climax community
Unit Study Guide:
1. What is an ecosystem?
2. List 5 components that an ecosystem must contain to survive indefinitely.
3. What are the levels of organization of living things from largest to smallest?
4. Compare and contrast niche and habitat.
5. What is the difference between adaptation and evolution?
6. Compare and contrast natural selection and artificial selection.
7. Describe the three steps by which a population of insects becomes resistant to
pesticide.
8. List the 6 kingdoms of organism and the characteristics of each kingdom.
9. Identify producers, consumers, and decomposers of a forest ecosystem.
10. Compare and contrast a food web and a food chain.
11. If the grass produces 10,000 unit of energy, how much energy is lost from the
grass to the snake in the following food chain: grass  grasshopper  mouse 
snake?
12. Explain the need for water, carbon, and nitrogen in ecosystem
13. Explain the difference between denitrification and nitrogen-fixing bacteria.
14. What is the difference between primary and secondary succession?
15. Why is the number of trophic levels that can exist limited?
16. Why are decomposers an essential part of an ecosystem?
17. Give an example of a pioneer species.
18. What is a climax community? Give two examples of organisms you would find
in one.