Sub Plans: Friday, April 20 Population Dynamics Sub Plans: Friday, April 20

Warm Up April 20, 2018 What is the difference between a biotic factor in an ecosystem and an abiotic factor in an ecosystem? Provide one example of each. Which resources do organisms compete for in an ecosystem? How do humans affect the number of organisms living in an ecosystem.?

Graphic Organizer – Directions

Graphic Organizer Reflection What is population dynamics? What is the carrying capacity of an ecosystem? Using the diagram on page B82, answer the following question. How is the number of individuals changing over time? Using the graphs on page B83 answer the following question. Which graph illustrates exponential growth? What did Darwin observe about the size of a population? What are two factors that affect population size? What is the difference between low density and high density? Using the diagram on page B85, answer the following question. How does the number of Herons in an area compare with the number of bees? Why is the Heron population an example of low population density? Using the diagram on page B86, answer the following question. Compare and contrast the way populations are spaced. Why do member of a clumped population form small groups within a habitat? Why do member of a uniform population evenly space out within a habitat? What four factors do scientists use to predict changes in populations? If scientists were to study the population growth of Charlotte, North Carolina, What do you think they would say about the size of the population, the density of the population, and the spacing of the population within the city of Charlotte? Briefly describe each.

Extension Activity: What Darwin Never Knew -Video Viewing Guide