Binder Section: Notes Due Date: 12/06/19 Name: Ecology Unit Lesson Two Part One: How Do Populations Change? Estimated Population Size Actual Population Size 1. What method did you use to estimate the size of the population? 2. How do you think a scientist might estimate the size of a population of trees in a forest? What about deer? Watch, “Basic Sampling Techniques” 3. List some of the different ways ecologists count populations 4. Why are plant populations easier to count than animal populations? 5. How are ecologists using technology to help them make more accurate population estimates? Watch, “Tracking Snakes In The Wild” 6. List some things ecologist want to know about animal populations. 7. Why is population ecology important? Read Pages 68 and 69 8. Fill in the blank: can change in size when new members the population or when members the population. 9. What is birth rate? Death rate? Birth Rate - Death Rate - 10. If more individuals are born into a population than die in a period of time, how will this affect a population? 11. If the birth rate and the death rate for a population are even, what effect will it have? 12. If the death rate is higher than the birth rate, what effect will this have on a population? Do The Math