Unit Test 3 Review Sheet


Population Dynamics

Key Vocabulary

Arithmetic growth
Biotic potential
Carrying capacity
Density-dependent factor
Density-independent factor
Exponential increase
Environmental resistance
K strategist
Population density
Predator-Prey Oscillation Curves
R strategist

Essential Questions
1. How do you estimate the population of groups of organisms in a large area?

2. What factors might regulate the population growth of an organism?

3. Know the dynamics behind the predator-prey population oscillation curves.

4. Be able to differentiate between R and K reproductive strategies

5. Know how to recognize density-dependent and density-independent factors effecting population levels.


Human Populations

Key Vocabulary
Age structure
Age structure histograms
Birth rates
Birth control
Crude birth rate
Crude death rate
Death rate
Demographic Transition
Developed countries
Developing countries
Doubling time
Infant mortality
Replacement fertility level
Rule of 70
Survivorship Curves

Essential Questions
1. Which first four countries are the most highly populated in order?

2. How does the growth rate of humans affect the use of world resources and habitat destruction?

3. What is the impact of population growth on hunger and disease?

4. Which areas are currently suffering the most from the impacts of extreme population increase?

5. How do underdeveloped civilizations go through changes in age structure, birth rates, infant mortality, death rates and population growth as they become more industrialized (demographic transition)?

6. Know how to read age structure diagrams.

7. Know how to calculate the annual percent growth rate from the birth and death rates per 1000 people.

8. Know how to read survival curves for different organisms and how the the chart signifies the full potential live span of an individual no matter how short their life actually is!

9. How do you calculate the doubling time of organisms?

10. What are some possible solutions to the soaring world population growth?

11. Know important case studies of the impact of harsh strategies to lower population growth. Ex. China and India 


Environmental Health and Toxicology

Key Vocabulary
Asbestos fibers
Background radiation
Dose-Response Curves
Radioactive decay
Risk analysis
Threshold level

Essential Questions
1. What are the biggest biological and chemical threats to human life? How do the threats to Americans differ from people who live in places like Kenya, India or Russia?

2. What are the most tragic toxic disasters around the world? ex. Bhopal, Chernobyl, Love Canal, Minamata, Three Mile Island, Fukushima Nuclear Crisis, Kuwaiti Oil Fires, Deep Water Horizon Oil Spill, Exxon Valdez, and Seveso Dioxin Cloud.

3. What is the significance of the LD50 dose and the threshold level of toxicity?

4. What information is given in a dose-response curve graph?

5. How does the damage to an organism differ between a chronic and an acute dose of a toxin?

6. How do the results of toxicity tests relate to environmental degradation and human health?

7. A mutagen, teratogen and carcinogen all affect humans in which ways? Which would be considered an hereditary illness?

8. What are safe alternatives to using HAZMATS in the home?

9. Roughly how many people are estimated to have AIDS right now? How many have died?

10. How does the amount of radioactive material change with each consecutive half life?

11. How is environmental risk measured?