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🙏 Free review 2020
Required Environmental Legislation
- Why Do I Need to Know These?
- What Are The Required Pieces of Legislation?
- Laws Involving the Disposal of Hazardous Wastes
- RCRA: Resource Conservation and Recovery Act
- CERCLA: Comprehensive Environmental Response, Compensation, and Liability Act
- Air & Water Protection
- Clean Air Act
- Clean Water Act
- Safe Drinking Water Act (SDWA)
- Biodiversity Protection
- CITES: Convention on Int’l Trade in Endangered Species of Wild Fauna & Flora
- Endangered Species Act
- Commonly Confused International Protocols
- Montreal Protocol
- Kyoto Protocol
- Carcinogens
- Delaney Clause Of Food, Drug, and Cosmetic Act
Major Environmental Disasters
- Why Do I Need to Know These?
- What Are These Major Environmental Disasters?
- Unit 6 - Energy Resources - Disasters
- Chernobyl, Ukraine
- Three Mile Island, Pennsylvania
- Fukushima Daiichi Reactor, Japan
- Exxon Valdez, Alaska
- Unit 7 - Air Pollution - Disasters
- Great Smog, London
- Unit 8 - Aquatic/Terrestrial Pollution, Waste, and Toxicity - Disasters
- Bhopal, India
- Love Canal, New York
- Minamata Bay, Japan
- Unit 9 - Global Change - Disasters
- Great Barrier Coral Reef Bleaching, Australia, Pacific Ocean
✍️ Free Response Questions (FRQs)
🏜 Unit 1: The Living World: Ecosystems
🐠 Unit 2: The Living World: Biodiversity
👪 Unit 3: Populations
3.0Unit 3 Overview: Populations
- ⚡ Key Terms
- 3.1 Generalist and Specialist Species
- 3.2 K Selected and r selected species
- 3.3 Survivorship curves
- 3.4 Carrying Capacity
- 3.5 Population Growth and Resource Availability
- 3.6 Age Structure Diagrams
- 3.7 Total fertility rate
- 3.8 Human Population Dynamics
- 3.9 Demographic Transition
- ⚡ Quick Study - Key Terms
🌏 Unit 4: Earth Systems and Resources
🏖 Unit 5: Land and Water Use
⚡️ Unit 6: Energy Resources and Consumption
💨 Unit 7: Atmospheric Pollution
♻️ Unit 8: Aquatic and Terrestrial Pollution
🔥 Unit 9: Global Change
🧐 Multiple Choice Questions (MCQs)
Image Courtesy of Pixabay
Humans experience population growth or decline through infant mortality rates, birth rates, immigration, emigration and the development of a country. Factors that go into a population declining or increasing are access to family planning, nutrition, education and jobs.
Industrialization enabled the human population to grow because there was an increase in sanitation, food and medicine. These basic needs allowed people to live a longer healthier life.
Rule of 70
A way to predict the doubling time of a population size is by the rule of 70. This rule states that dividing the number of 70 by the percentage population growth rate approximates the population doubling time.
Just like there is a carrying capacity for smaller habitats, Earth also has a limit of finite resources which can support
Example: A population of birds on a small island has an annual population growth of 2.5%. What is the doubling time for the population ?
Limiting Factors on Population Growth
There are two types of factors that can limit population growth - density independent and density dependent.
A density independent factor is a limit on population growth regardless of population density (size). Some examples of density independent factors are weather, climate, storms, fire, heatwaves, or droughts. For example, the tsunami that hit Japan in 2011 killed people regardless of the population size. A tsunami is not preventable and can not be controlled by competition with resources.
However a density dependent factor is affected by the size of a population. Some density dependent factors are access to clean water, air, food availability, disease, and territory size.
Population Formulas
Annual Percent Change ➪ this formula is used to calculate the change in population
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