1. BIODIVERSITY & HUMAN IMPACT PowerPoint, Notes & Practice Q’s

2. Biodiversity: all the different organisms in an area
HIGH in ocean & rainforest
LOW in desert & tundra
Stable Ecosystem
HABITAT - organism’s environment
NICHE - organism’s way of life (role)
ADAPT - respond to change
RESILIENCE - recover from disasters
BALANCE - nutrients & resources

3. HOW do humans mess up the balance?

4. H I P O abitat Destruction nvasive Species ollution opulation Grown
verhunting

5. HABITAT
DESTRUCTION

6. Habitat Destruction Activity Examples Reason Effect
DEFORESTATION: Clearing trees
DRAINING WETLANDS: Filling in ponds/lakes
Disrupt food chain
Migrate or become endangered/extinct
More CO2, Less O2
Space for building
Room for crops
Food, lumber, medicine, paper

7. INVASIVE
SPECIES

8. Invasive Species Activity Examples Reason Effect NON-NATIVE:
Not originally from area
Kudzu, Zebra Mussels,
Burmese Pythons
NO NATURAL PREDATORS
Reproduce quickly
Compete with natives for resources
Control environmental problems
Accident or for exploitation

9. POLLUTION

10. Killing animals & plants
Activity
Examples
Reason
Effect
Pollution
Global Warming
Acid Rain
Killing animals & plants
AIR: burning fuels
WATER: sewage & runoff
LAND: landfills
CONVENIENCE
More humans =
Use more resources

12. Population Growth 3x amount of people 1950-2000
Activity
Examples
Reason
Effect
Population Growth
3x amount of people
URBANIZATION (developing cities)
Better medicine & treatments
More opportunity in cities
Less resources for ecosystems
Rise in CO2 levels (global warming)

13. Overhunting Food, clothing, medicines Fun/sport Biodiversity loss
Activity
Examples
Reason
Effect
Overhunting
Food, clothing, medicines
Fun/sport
Biodiversity loss
Greater risk of endangered / extinct
Hunting & Poaching
Overfishing

14. #1 #2 #3 #4

15. #5 #6 #7 #8

16. #9
#10
#11
#12

17. #13
#14
#15
#16

18. #17
#18
#19
#20

19. #21
#22
#23
#24

20. ANSWER KEY 1 B 2 A 3 C 4 D 5 C 6 A 7 D 8 B 9 C 10 D 11 C 12 D 13 B