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Seats : period 1

Seats : period 1. Seats : period 5. Catalyst. 4 minutes!. What is ecology ? What is an ecosystem ? Describe the ecosystem in the picture. What is a biotic factor ? Give 1 example from the picture. What is an abiotic factor ? Give 1 example from the picture.

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Seats : period 1

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  1. Seats: period1

  2. Seats: period 5

  3. Catalyst 4 minutes! • What is ecology? • What is an ecosystem? Describe the ecosystem in the picture. • What is a biotic factor? Give 1 example from the picture. • What is an abiotic factor? Give 1 example from the picture. • Using the picture, create a definition for population.

  4. 100.B • 1: Raise a hand • 1: Demonstrate North Star traits • Problem solver • Goal driven • 3: 100% seated before the bell • 3: “Ready for your attention” • 3: Lab / activity clean up • 5: 100% on task during practice • 5: 80% exit ticket average Headphones on Friday!

  5. 100.B love it or hate it! hot seat ! head phones ! hot seat ! music ! hot seat ! head phones ! head phones ! head phones !

  6. Evolution Test • 6.1 Explain how evolutionis demonstrated by evidence from the fossil record, comparative anatomy, embryology, gene flow,and examples of natural selection. • 6.2 Describe species as reproductively distinct groups of organisms. • 6.3Describe the role that geographic isolation can play in speciation. • 6.4Recognize that species are further classified into a hierarchical taxonomic system (kingdom, phylum, class, order, family, genus, species) based on similar characteristics. Renee Tyrone D’AndrewNoemi Breanna Luis Nakerie Mary Dorothy Stephanie Briana Martell Auziauna Richard Fabian Shantiera Kiara

  7. unit 7: ecology

  8. Objectives • Agenda • Catalyst 5 • Population Intro 20 • Guided Practice 5 • Partner Practice 5 • Independent Practice 10 • Exit Ticket 5 • We are learning to… • explain the effects of interactions between populations in ecosystems • We will be successful when we can… • explain how birth, death, immigration, and emigration influence population size science genius!

  9. Populations • A populationis a group of individual organisms • Must be of the same species • Must live in the same habitat

  10. How do populationschange? Birth Rate = number of organisms born Death Rate = number of organisms that die

  11. How do populationschange? Immigration= the number of organisms that move INTO a population Immigration = Into a population • Emigration= the number of individuals that EXITfrom a population Emigration = Exiting a population

  12. SDHS Population • Each year we have a new freshmen class • SDHS cardinals are born • Each year we have a graduating senior class • SDHS cardinals“die” • Each year we have students that transfer to South • SDHS cardinals immigrate • Each year we have students that transfer from South • SDHS cardinals emigrate

  13. SDHS Population • This year 340 freshmen started at South • This year 220 seniors graduated from South • This year 80 students transferred into South • This year 60 students transferred out of South Is the SDHS populationincreasing or decreasing? Why? INCREASING

  14. Exponential Growth • A growth pattern in which individuals reproduce at a constant rate • This occurs if a populationhas: • Unlimited resources • Few predators • No disease

  15. Exponential Growth A populationof bacteria starts with one individual. The individuals can reproduce every 20 minutes. • How many individuals will the populationhave after 1 hour? • How many individuals will the populationhave after 2 hours? • How many individuals will the populationhave after 3 hours? Can populationsgrow exponentially forever? Why or why not?

  16. Logistic Growth • A growth pattern in which the population’sgrowth rate stops or slows down after a period of exponential growth • If a population: • Has its birth ratedecrease • Has its death rate increase • Has decreasedimmigration • Has increasedemigration • Reaches its carrying capacity or the maximum number of individuals a habitat can support exponential growth logistic growth

  17. PopulationGrowth Carrying capacity Exponential growth Logistic growth

  18. Guided Practice

  19. Partner Practice 5 minutes! 1

  20. Independent Practice 10 minutes! 0

  21. Independent Practice 10 minutes! Cattle-like animals called wildebeests live in Africa. The wildebeest populationdecreased for many years because of a fatal virus. The virus was eliminated in the 1960s by vaccinating the wildebeests against the virus. The graph below shows changes in the size of the wildebeest population from 1961 to 1983. 0

  22. Exit Ticket 4 minutes! 4 minutes! • You may use your assignments! • You must work quietly & independently. • Talking will NOT be tolerated. BIG goal = 80% 0

  23. Exit Ticket 4 minutes! 4 minutes! • You may use your assignments! • You must work quietly & independently. • Talking will NOT be tolerated. BIG goal = 80% 0

  24. Thank You! Chase Glisson Lindy LaPlante Karmen Somers Thank you for donating to our classroom Thanks so much for supporting our field trip We appreciate your generous donation My favorite part of the field trip was… The best part of the day was… I loved seeing… I learned about… Our field trip helped me understand… This experience was important to me because… 1 2 3

  25. Turn it in  homework due YESTERDAY!

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