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1. 812 Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions.

2. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. Key concepts/skills: Level 1: Define key vocabulary. Level 2: Identify the four parts of natural selection. Explain why genetic variation is important. Level 3: Given data that shows population variation, explain the environmental pressures or adaptations that are affecting population growth.

3. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. Key vocabulary: Population (review) environmental pressures competition Natural selection limits on populations predation Genetic variation genetic bottleneck starvation Population variation adaptation (review)

4. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. Populations A. Individuals of the same species living in the same area 1. Population Variation – natural increases and decreases in the number of individuals in a population 2. Genetic Variation – variation in the traits of a population (all humans look different) 3. Adaptations – any trait that increased the survival and reproduction of a species

5. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. II. Limits on Population A. The following limit populations 1. Environmental Pressures a. Food, water, seasons, weather 2. Predation – predators and prey limit one another’s pop. 3. Competition – organisms compete for food, mates, and space 4. Disease – communicable diseases limit a population

6. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. III. Natural Selection A. 4 Stages of Nat Sel. 1. Overpopulation – More offspring are born than will live to become adults

7. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. 2. Genetic Variation – individuals have different traits in a population

8. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. 3. Struggle to survive – environmental pressures, competition, and predation take their toll on the population

9. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. 4. Successful Reproduction – only the individual that survives the pressures on the population reproduce

10. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. B. Genetic Bottlenecking – large variety in a population suddenly disappears becase of many pressures on the pop.

11. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. *Environmental Pressures *Competition and *Predation Population with Genetic Variation Natural Selection