1. Do now activity What is population density?
How is geographic distribution measured?
If there are 500 foxes inhabiting 100 km 2 area of land, what would the population density be?
What is a growth rate?

2. Essential Question: Section 9-3: succession
What are the possible consequences that can result from a disturbance within a community?
Section 9-3: succession
Learning Target
Predict how a specific change within an ecosystem can impact the organisms within the community.

3. announcements Biology Tutoring this week: Lunch B (Tuesday & Thursday)
7:00AM (Monday – Friday)
After school Biology Tutoring: Tuesday
Section 8 Quiz Retakes are available until 4/14/17.

4. announcements Available Extra Credit: 3 Tissue Boxes = 1 Class Pass
5 Tissue Boxes = 2 Class Passes

5. Don’t forget to chunk your notes!

6. When an environment is changed over time
overview
When an environment is changed over time

7. Primary Succession: happens on “new land”

8. Pioneer Community: First species to take over an environment (weeds).
Primary succession
Pioneer Community: First species to take over an environment (weeds).

9. Primary succession
Climax Community: The end of succession. The community is stable for a long time.

10. Secondary succession
Secondary Succession: happens after an environment is destroyed (“old land”)