1. Turn to Do Now Section in Notebook
Merlin
Nia’Milika
Kiara
Terrence
Tyrik
Toreal
Leonard
Zyriah
Odaisha
Leroyal
Jourdan
Da’janae M.
Da’janae R.
Kevin
Renee
Chevonne
Romad
Anthony
Garyell
Thuy
Shaheem
Jada
Arell
Kailand
Marcus
Jeremie
Jaelan
Kiffy
Braxton
Crystell
Directions:
Turn to Do Now Section in Notebook

2. 2.17 Do Now Volume 0 – Complete Sentences
A population of squirrels in Louisiana was significantly reduce after Hurricane Ivan. Meanwhile, a population of squirrels in Wisconsin was significantly reduced after a few hawks joined their habitat. Which one of these factors is density dependent? Why?
What do you think caused the population to quit growing in the second graph below? Explain your reasoning.

3. How Populations Grow
Growth rates tend to change depending on the resources available to the organisms in the population
There are two basic patterns of population growth:
Exponential
Logistic

4. Exponential Growth:
Exponential Growth: when a population increases by a fixed percentage each year
Usually occurs when a small population of organisms are introduced to a new environment with ideal conditions
Normally not sustained for very long because the resources of the environment are limited

5. Logistic Growth
Logistic growth: describes how a population’s initial exponential growth is slowed and finally stopped by limiting factors
Limiting factors: characteristics/factors of the environment that limit population growth; determine population’s carrying capacity

6. Exponential Growth Curve Type: J-Shaped Explanation:
Every incremental increase in number (of individuals) is larger than the one before it

7. Logistic Growth: Explanation:
Curve Type: S-shaped
Explanation:
Displays how population size follows this order:
increases rapidly at first
grows more slowly
stabilizes at carrying capacity

8. Everybody Writes
What would happen if cougars grew exponentially for 100 years?
Be graphic and imaginative in 2-3 complete sentences.

9. Carrying Capacity
Carrying capacity is the largest population size a given environment can sustainably support
Populations fluctuate above and below carrying capacity
Fluctuations caused by changes in birth rates and death rates
Changes in birth rates and death rates are caused by density dependent limiting factors
Density dependent limiting factors include…

10. Achieve 3000 Leave the Corals Alone (Deadline: today at 11:59 pm.)
Who Gets to Stay (Deadline: today at 11:59 p.m.)
Components to Complete:
- Before reading poll
- Article
- Activity
- After Reading Poll