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Human Impact

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by

Dianna Wiles

on 9 December 2015

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Transcript of Human Impact

Wowing template. Click through in 20 steps.
But we can move beyond the present.
Why?
Here is something small...
Here is some context. Provide some common ground.
Or something from the present, that we should look beyond.
1. Human beings are part of the Earth's ecosystem.
Human Impact
On the
Enviroment

An Example:
30
So...
E.Surface Mining
F. Landfills
G. Species Extinction
H. Deforestation
A. Dams
B. Farming
D.Overpopulation
C. Habitat Restoration
I. Urban Development
18. Negative effects of surface mining:
a.Groundwater pollution
b.Deforestation
c.Habitat destruction
Surface Mining
Landfills
14. Known as a dump. A site for the disposal of waste materials.
15. Negative impacts occur from landfills:
a. Off gassing of methane
generated by decaying organic or living waste.
b. Damage to roads by heavy vehicles
transporting trash.
c. Pollution of (groundwater)
d. Rats and flies
e. Injuries to wildlife
f. Environmental noise pollution
Deforestation
19. Deforestation is the conversion of forested areas to non-forest land.
20. Negative effects of deforestation:

1. Global warming
(no trees to get rid of CO2)
2. Destroys habitats
3. Reduces biodiversity
4. Increases pollution
5. Increases erosion
(causes flooding)
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Dams
11. A dam is a barrier that divides waters and is usually used for retaining water.
12. Dams are used for:
a.Hydroelectric power
b.Irrigation
c.Flood prevention
13. Negative impact of Dams:

a.Temperature changes

in the water. Some organisms may not be able to adapt.
b.Older dams don’t have a fish ladder
to help fish get upstream to their normal breeding grounds.
c.Habitat destruction-
Replacement of the original environment by a new inland lake.
Habitat Restoration
21. Habitat restortion is the process of returning a damaged habitat back to its healthy former condition.
22. While it is rare to restore the land back to its original condition, the rehabilitation process attempts to bring some amount of restoration.
Examples of habitat restoration:
a. Planting trees & grass
b. Cleaning up contaminated habitats.
Farming
9. Farming refers to the production of goods through the growing of plants and the raising of animals.
10. Some of the negative effects are:
a. Loss of biodiversity
(plant and animals)
b. Soil erosion
c. Deforestation
d. Water pollution
in rivers and lakes caused by chemicals such as: herbicides, fungicides, and insecticides.
e. Air pollution
from
off-gassing from animal waste & from farm equipment powered by
fossil fuels
Urban Development
6. What are two negative impacts of urban development ????

a. Habitat loss

b. Pollution
Overpopulation
7. Overpopulation refers to a condition where an organism’s numbers exceed the carrying capacity of its habitat.
8. Overpopulation may cause:
a. Polluted water, air, and land.
b. Food, shelter and other resources may become limited.
5. Development or building of towns, cities and roads.
16. Surface mining is a type of mining in which soil and rock overlying the mineral deposit are removed.

17. It is the opposite of underground mining, in which the overlying rock is left in place, and the minerals are removed through shafts or tunnels.
3. An extinct species is a species that has completely disappeared from the planet .

What is killing the bats?

Species Extinction
2. Human activity can purposefully or accidentally alter the balance in
an ecosystem.
Full transcript