Auburn University Biology Final Exam
and All Correct Answers 2026-2027
Updated.
1. What are endangered species? - Answer faces immediate extinction throughout all or most
of its range
1a. What are threatened species? - Answer likely to become endangered in the foreseeable
future
2. What is the main reason why organisms adapt to environmental changes? - Answer genetic
diversity
2a. What is genetic diversity? - Answer genetic variation across species; number of different
alleles and relative frequencies of alleles within populations and species
3. What happened at Yellowstone National Park after the reintroduction of wolves? - Answer
The wolves decreased the number of elk which increased aspen tree count which increased the
habitat for birds, beavers, and bees.
4. What are direct and indirect values of biodiversity? - Answer Direct: Medicinal, Agricultural,
and Consumptive Use
Indirect: Waste Disposal and Ecotourism
4a. Give examples of direct values of biodiversity: - Answer Medicinal- penicillin
Agricultural- biological pest control
Consumptive Use- wild fruit, wild vegetables, beeswax, seaweed, and wild meat
4b. Give examples of indirect values of biodiversity: - Answer Waste Disposal- using bacteria in
wastewater treatment
Ecotourism- many people prefer to vacation in natural areas
Regulation of Climate- locally, trees provide shade and reduce noise
5a. Give examples of each threat to biodiversity: - Answer 1. Habitat Loss- urbanization
(running interstates through rainforests)
2. Exotic Species- non-native members of a community (kudzu originally from China and Japan
was brought to the U.S. and it is overgrown)
3. Pollution- climate change increases sea levels and temperatures
, 4. Overexploitation- poaching
5. What are threats to biodiversity? - Answer 1. Habitat Loss
2. Exotic Species
3. Pollution
4. Overexploitation
6. What is a population? - Answer includes all the organisms of the same species interacting
with the environment in a particular area
6a. What is a community? - Answer consists of all various populations at a particular area
7. What is exponential growth? - Answer Exponential growth- "J-shaped" and has two distinct
phases
7a. What is logistic growth? - Answer Logistic growth- "S-shaped" and has six distinct phases
8. What is pollution? - Answer any environmental change that adversely affects the lives and
health of living organisms
9. What are the 5 types of pollution? - Answer 1. Acid Deposition
2. Eutrophication
3. Ozone Depletion
4. Organic Chemicals
5. Climate Change
9a. Give examples of each type of pollution: - Answer 1. Acid Deposition- gasses from power
plants and auto exhaust turn acids when combined with water vapor from the atmosphere
2. Eutrophication- excessive richness of nutrients in a lake or other body of water
3. Ozone Depletion- release of chlorofluorocarbon (CFCs) into the atmosphere breaks down the
protective ozone layer
4. Organic Chemicals- used in pesticides, dishwashing detergents, cosmetics, plastics,
spermicides
5. Climate Change- increase in Earth's temperature due to increase greenhouse gasses
10. What are the 4 types of broad waste? - Answer 1. Industrial
2. Commercial
and All Correct Answers 2026-2027
Updated.
1. What are endangered species? - Answer faces immediate extinction throughout all or most
of its range
1a. What are threatened species? - Answer likely to become endangered in the foreseeable
future
2. What is the main reason why organisms adapt to environmental changes? - Answer genetic
diversity
2a. What is genetic diversity? - Answer genetic variation across species; number of different
alleles and relative frequencies of alleles within populations and species
3. What happened at Yellowstone National Park after the reintroduction of wolves? - Answer
The wolves decreased the number of elk which increased aspen tree count which increased the
habitat for birds, beavers, and bees.
4. What are direct and indirect values of biodiversity? - Answer Direct: Medicinal, Agricultural,
and Consumptive Use
Indirect: Waste Disposal and Ecotourism
4a. Give examples of direct values of biodiversity: - Answer Medicinal- penicillin
Agricultural- biological pest control
Consumptive Use- wild fruit, wild vegetables, beeswax, seaweed, and wild meat
4b. Give examples of indirect values of biodiversity: - Answer Waste Disposal- using bacteria in
wastewater treatment
Ecotourism- many people prefer to vacation in natural areas
Regulation of Climate- locally, trees provide shade and reduce noise
5a. Give examples of each threat to biodiversity: - Answer 1. Habitat Loss- urbanization
(running interstates through rainforests)
2. Exotic Species- non-native members of a community (kudzu originally from China and Japan
was brought to the U.S. and it is overgrown)
3. Pollution- climate change increases sea levels and temperatures
, 4. Overexploitation- poaching
5. What are threats to biodiversity? - Answer 1. Habitat Loss
2. Exotic Species
3. Pollution
4. Overexploitation
6. What is a population? - Answer includes all the organisms of the same species interacting
with the environment in a particular area
6a. What is a community? - Answer consists of all various populations at a particular area
7. What is exponential growth? - Answer Exponential growth- "J-shaped" and has two distinct
phases
7a. What is logistic growth? - Answer Logistic growth- "S-shaped" and has six distinct phases
8. What is pollution? - Answer any environmental change that adversely affects the lives and
health of living organisms
9. What are the 5 types of pollution? - Answer 1. Acid Deposition
2. Eutrophication
3. Ozone Depletion
4. Organic Chemicals
5. Climate Change
9a. Give examples of each type of pollution: - Answer 1. Acid Deposition- gasses from power
plants and auto exhaust turn acids when combined with water vapor from the atmosphere
2. Eutrophication- excessive richness of nutrients in a lake or other body of water
3. Ozone Depletion- release of chlorofluorocarbon (CFCs) into the atmosphere breaks down the
protective ozone layer
4. Organic Chemicals- used in pesticides, dishwashing detergents, cosmetics, plastics,
spermicides
5. Climate Change- increase in Earth's temperature due to increase greenhouse gasses
10. What are the 4 types of broad waste? - Answer 1. Industrial
2. Commercial
