1. Human Impact
on the 
Environment

2. Technology
Changed ecosystems(For the most part in a Negative way)

3. Unrestricted growth of human population stressed carrying capacity
resources are at risk

4. can be replaced if given enough time
Renewable Resources
can be replaced if 
given enough time
Ex: Fish 
in a lake

5. Ex: Fossil fuels and minerals
Non-Renewable
cannot be replaced
Ex: Fossil 
fuels and 
minerals

6. weathering of rocks prevent erosion
Natural Ecosystems:
1. Maintain air quality
P.S  Respir. O2
CO2
2. Soil Formation
weathering of rocks 
prevent erosion

7. 3. Controls Water Cycle Lake decomposition and compost 4. Minerals
Transpiration
Lake
Absorption
4. Minerals
decomposition
and compost

8. THREATS TO GLOBAL STABILITY

9. 1.Direct Harvesting
destruction or 
removal of species 
from environment
Ex: 
Exotic 
Pets

10. = protected by laws Animals are killed for their body parts
Endangered Species
= protected by laws

11. -destroying forests -loss of habitats 2.Deforestation
50% of the 
Rainforest is 
gone since 150 
years ago

12. 3. Invasive Species
-a species introduced that is not native to an ecosystem and which causes harm.
-this species will compete with native species for resources
-they have no natural predators.

13. Invasive Species
-a species introduced that is not native to an ecosystem and which causes harm.
-this species will compete with native species for resources
-they have no natural predators.

14. Examples of invasive species - Brown Marmorated Stink Bug
-Halyomorpha halys, is native to China, Japan and surrounding countries. 
They were first discovered in the United States in Pennsylvania during the late 1990’s, but no one knows for certain how they were introduced to North America. 
Brown marmorated stink bug (BMSB) populations are exploding in the absence of their natural predators, and they are quickly becoming a nuisance to people in their homes and to the agriculture industry.
-Pterois "Lionfish"
-LionfishLionfish have successfully pioneered the coastal waters of the Atlantic in less than a decade and pose a major threat to reef ecological systems in these areas.
They have been described as "one of the most aggressively invasive species on the planet"
One likely ecological impact caused by Pterois could be their impact on prey population numbers by directly affecting food web relationships. This could ultimately lead to reef deterioration

15. 4.Industrialization
power plants burn fossil fuels
POLLUTION!

16. -runoff from chemicals -acid rain from smoke
5.Pollution
a) water pollution
-dumping wastes
-runoff from chemicals
-acid rain from smoke
Sewage
O2 in H2O

17. Toxic waste in water 
becomes more 
concentrated as you go 
up the food chain
DDT on crops
Runs into H20
Plants
0.08 DDT
1.28 DDT
2.28 DDT

18. Ex: Burning Fossil Fuels
b) Air pollution
-releasing pollution 
into the air
Ex: Burning 
Fossil Fuels

19. Burning Fossil Fuels 1.
Sulfur and 
Nitrogen 
combine with 
moisture in 
air = ACID 
RAIN 3.
Global 
warming = 
greenhouse 
effect 
caused by 
CO2
Smog->
Toxic 
Pollutants 
and 
sunlight = 
HAZE 2.

20. 1.)decrease fossil fuels
2 ways to fight
global warming:
1.)decrease fossil fuels
2.) plant trees

21. release of industrial gases
4.Ozone Depletion
release of industrial 
gases
Ozone Depletion

22. Leads to- more UV radiation = increase in cancer & plant death
CFC's= 
Chloroflorocarbons

23. 6. Land Use
-clearing land
= decrease in 
resources

24. SOLUTIONS Technology Environmental Laws Global Awareness
Individual Decisions
Natural Predators
Biological Controls

25. Preserve Resources
3 R's
Reduce
Reuse
Recycle

26. Reduce - Avoid using/ use energy efficently
Reuse - Use product over again
Recycle - processing used materials to make 
new ones