SCI 256
FINAL EXAM
Please enter your name in the upper right cell.
Read the directions carefully. Note that the exam is worth a maximum of 15 points (15% of your course grade). Some items are required, and some offer choices of which ones to complete. Except for Question 4, responses must be in your own words (no copied content or quotations allowed) in the blank areas provided; those areas will expand downward as you type. You do not need to cite sources for this test, especially because no copied content is permitted. Be advised that any copied content will not earn points. Please leave the content in the boxes alone; the instructor will complete those during grading.
NOTE: As your answers grow longer, the next item may scroll off the page. Make certain to continue until you reach the clearly marked “End of Exam” box.
REQUIRED QUESTIONS:
Content Points
Earned Points
Available
1. Describe the hydrologic cycle in detail. How does the hydrologic cycle help make oceans more acidic? What role does pH play in the health of ocean ecosystems? 4.0
Your response to Q1:

2. Name three major causes of deforestation. Where is deforestation most severe today? 2.0
Your Response to Q2:

3. What is biodiversity? What are three causes of biodiversity loss? 2.0
Your Response to Q3:

REQUIRED Matching Exercise
4. Review the following list and match the items with their descriptions (a through o) below. Enter your responses in the cells to the left of each definition. (Feel free to copy each response from the list below and paste it into the correct box.) Each correct response earns 0.2 points. Tip: Not all items in the list will be used. Each answer will be used no more than one time.
Available Responses:
AIDS
Algal Bloom
Aqueous Solution
Aquifer
Bioaccumulation
Biomagnification
Biosphere
Biotope
Carbon Cycle
Carbon Dioxide
Circle of Life
Coral Reefs DDT Kills: The Unrecognized Threat
Diarrhea
Effluent
Eutrophication
Fertilizer
Forests
Food Poisoning
Food Web
Gifford Pinchot
Groundwater
Hydrologic Cycle John Muir
Malaria
Methane gas
Niche
Oceans
Oxygen
Polluted Water
Rachel Carson
Silent Spring
The Excellent Powder
Trophic Level
Water

Your Answer Description Correct Incorrect
a. Area of uniform climate and environmental conditions
b. Author of a book about dichlorodiphenyltrichloroethane (DDT) and its environmental effects
c. The title of the book that the above author (b) wrote
d. A tiny physical space where an animal lives
e. How pollutants increase in concentration before entering the food chain
f. The increase in pollutants within the food chain
g. The molecular compound that is most blamed for climate change
h. The subsurface zone through which water flows; connects lakes, rivers, and other bodies of water.
i. Disease caused by polluted water that causes more than 1 million deaths worldwide annually
j. The surface of the earth is a ___________
k. Places where most living plants and animals live
l. Describes what eats what
m. Describes organisms that occupy the same energy position in a food chain
n. An early naturalist in California
o. One common material that can contribute to having too much nitrogen in a lake
Points Earned:

CHOOSE and respond to two (2) of the following questions. Please note: If you respond to more than two, only the first two responses will be graded. Responses must be in your own words (no copied content or quotations allowed) in the blank areas provided; those areas will expand downward as you type. You do not need to cite sources for this test, especially because no copied content is permitted. [Be advised that any copied content will not earn points.] Please leave the content in the boxes alone; the instructor will complete those during grading.
Content Points
Earned Points
Available
5. List three ways that forest fires are bad for an ecosystem. List three ways that fire is good for an ecosystem. 2.0
Your Response to Q5:

6. What do environmental scientists mean by sustainable development? Give an example of sustainable development. Give an example of development that is not sustainable. 2.0
Your Response to Q6:

7. Compare and contrast anthropocentrism, biocentrism, and ecocentrism. 2.0
Your Response to Q7:

8. Explain what a food web is. Explain how a food web is related to trophic levels. 2.0
Your Response to Q8:

9. What is a point source? What is a nonpoint source? Give an example of each. In your opinion, which one is more difficult to address? Explain why. 2.0
Your Response to Q9:

END OF EXAM

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