Environmental Science 20
Unit 3: Aquatic Ecosystems Review
Part A: Vocabulary
Salinity
Wetlands
Plankton
Marsh
Nekton
Swamp
Benthos
Bog
River Mouth
Ecology
Turbidity
Species
Transparency
Population
Detritus
Ecosystem
Productivity
Metabolic rate
Benthic Zone
Tides
Eutrophication
Euphotic Zone
River Source
Aphotic Zone
River Course
Littoral Zone
Estuary
Biotic factors
Mesotrophic
Habitat
Index Species
Niche
Keystone Species
Respiration
Abiotic factors
Oligotrophic
Part B: Short Answer Questions
1. What are three important functions of wetlands?
2. What is a coral reef made of? Why does it need sunlight to survive? Where is Coral Reefs usually found?
3. What is a tide? What happens during high and low tide? When do they occur?
4. What are geophysical properties and list 5 of these properties?
5. Describe the relationship between temperature and dissolved oxygen.
6. What is respiration and give the equation.
6. How does temperature affect respiration?
7. What is thermal pollution and describe 5 sources of thermal pollution?
8. What is turbidity and list biotic causes, abiotic causes? Know sources of turbidity.
9. List three chemical properties of freshwater ecosystems.
10. What are the four factors that affect the amount of dissolved oxygen in water?
11. What is the pH range for well-balanced fish population?
12. What five organisms are index species?
13. Give two examples of keystone species, describe why they are.
14. Briefly describe what happens in an algal bloom.
15. Label the light zones in an ocean and be able to describe where the energy comes from for each.
16. Fill in the table below
Water Temperature
How does increasing
turbidity affect it?
(Explain your answer!)
How does thermal
pollution affect it?
(Explain your answer!)
How does water speed
affect it?
How does water depth
affect it?
Dissolved Oxygen
Respiration