Human Impact on the Environment

1
Human Impact on the Environment

1. What is the definition of carrying capacity?
2. What is the approximate carrying capacity of this
   population?
3. What are two periods of time when population was
   greater than carrying capacity?
4. What are two reasons why the population might
   have decreased after these periods?

Write in complete sentences! Dont talk during
the Catalyst!
2
Objectives

• By the end of today, all SWBAT
• Explain 4 ways that humans are decreasing
  biodiversity
• Habitat destruction
• Hunting
• Invasive species
• Global warming

3
Agenda

• Planet Earth segment 1
• Notes decreasing biodiversity
• Reading Jigsaw
• Independent work (reading and answer reading
  questions)
• Partner work (to fill out half of the graphic
  organizer)
• Sharing findings as an entire group and PE
  segments 2-5
• Exit Question

4
Endangered Species

• Endangered Species a species whose numbers are
  so small that they are in danger of extinction
• Endangered Species Act was passed in 1973 to
  protect these species

5
15,000 Species are Endangered
6
Planet Earth Segment Saving Species

• Watch the clip
• Answer the questions to Part 1 on your classwork
  sheet

7
Humans Impact on Biodiversity

• Key Point 1 HUMANS ARE DECREASING BIODIVERSITY
  in 4 main ways
• Habitat destruction
• Invasive species
• Hunting
• Global warming

8
Habitat Destruction

• Habitat destruction when animals homes are
  destroyed to build farms, houses, or stores, or
  by pollution

9
Modern Amazon rainforest.1 of the worlds
original forest is lost every year!
10
Deforestation for farmland
11
Deforestation for Homes
12
Invasive Species

• Invasive species NON-NATIVE plants and animals
  that have a NEGATIVE influence on an area
• Non-native not originally from the area

13
Hunting
14
Global warming

• Global warming increase in average global
  temperature
• Many negative effects
• Melting ice
• Drought
• Animals adopting weird behaviors

15
Group (4) Reading Jigsaw

• 3 steps
• Independently read and answer questions
• With a partner
• Compare answers
• Complete your HALF of 3.6 Putting it all
  Together
• With entire group (4) fill in the remaining half
  of 3.6 Putting it all Together

16
Reading Jigsaw Step 1

• Independent reading time
• Read
• Answer reading questions

17
Reading Jigsaw Step 2

• Combine with partner that read exactly the same
  thing as you
• Discuss reading questions answers
• Complete HALF of of 3.6 Putting it all Together

18
Reading Jigsaw Step 3

• As a group of 4 share your results and complete
  ALL of 3.6 Putting it all Together
• Habitat Destruction
• Invasive species
• Hunting
• Planet Earth segment 2
• Global Warming
• Planet Earth segment 3 and 4

19
Planet Earth Vanishing Species

• Watch and answer movie questions
• Poaching
• Polar bears and global warming
• Stemming the Extinction Tide
• Which Species do we Save

20
Key Point Wrap-Up

• There are 15,000 endangered species on Earth
• Humans are decreasing biodiversity by
• Habitat destruction
• Global warming
• Hunting
• Invasive species
• Decreasing biodiversity reduces the stability of
  our world

21
Exit Questions

1. Describe in a complete sentence how habitat
   destruction impacts species biodiversity.
2. How is the polar bear threatened by global
   warming?
3. Describe how one specific animal species is being
   threatened by hunting.

Write in complete sentences! Dont talk during
the Exit Question!