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Understanding Acid Rain and Its Environmental Impact

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Acid rain, caused by pollutants like sulfur dioxide and nitrogen oxides, poses severe threats to the environment. It harms aquatic ecosystems, degrades soil quality, and damages forest habitats. Additionally, it can affect human health and infrastructure. In population biology, understanding growth patterns is crucial, as exponential growth leads to rapid increases, represented by a J-shaped curve, while linear growth shows steady increases. Carrying capacity defines the maximum population an environment can sustain, influenced by predation, competition, and environmental changes.

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Understanding Acid Rain and Its Environmental Impact

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  1. Journal #______ • What is acid Rain? • Name at least 3 ways it is harmful to the environment

  2. Day 5

  3. Population Biology Compare Exponential & Linear Population Growth • Exponential: • Occurs when number of organisms increases rapidly • Produces J-shaped curve on graph

  4. 2. Linear: • Shows slow steady growth • Birth & death rates are equal • Produces straight line on graph

  5. Describe carrying capacity • The number of organisms that an environment can support • Limits the population • Affected by: temperature, food supply, reproduction, hunting

  6. Figure 5-4 Logistic Growth of Yeast Population Section 5-1 Carrying capacity Number of Yeast Cells Time (hours) Go to Section:

  7. What are some factors that affect population size? • Predation: • Predators limit number of prey • Pick out the sick, old, young • 2. Competition: • Compete for resources • Water, food, living space, mates

  8. Figure 5-7 Wolf and Moose Populations on Isle Royale Section 5-2 60 2400 50 2000 40 1600 1200 30 20 800 10 400 0 0 1955 1960 1965 1970 1975 1980 1985 1990 1995 Moose Wolves Go to Section:

  9. 3. Environmental changes: • pollution, thermal warming, unfit water, disease, all effect the population number

  10. 4. May cause species to become threatened or endangered • Threatened - when population declines rapidly • Endangered - when numbers are so low that extinction is possible in near future • c. Extinction - disappearance of species

  11. Quiz #4

  12. 1. The number of species that a community can support is called? a. carrying capacity b. limiting factor c. succession 2. _______ growth shows a slow steady growth. A. exponential b. carry c. linear d. predation 3. When a population declines rapidly, this is called _______. A. endangered b. extinct c. unfit d. threatened 4. Name 1 change that could effect populations. Number 5 is on the next slide

  13. 5. What is happening at the top of the graph? A. more deaths than births b. births=deaths c. more births than deaths

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