Transcript How Human Activities affect the Environment

How Human Activities affect the
Environment
Table of Contents
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Science Process Skills
Parts of a Cell
Classifying Animals
Ecosystems
Food Chains/Webs
Photosynthesis
Symbiotic Relationships
Fossils
Eco-columns
Pollution---------------------------next clean page
Pollution
Definition
adding harmful substances or products into
the environment
The use of FOSSIL FUELS are the biggest
cause of pollution
What are fossil fuels?
Oil, gas, and coal
 Easy to use and contain a lot of energy
 They can affect the environment in many
ways
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Air Pollution

Pollutants (such as burning fossil fuels)
released into the atmosphere can have
harmful effects.
Smog
 Depletion of the ozone layer
 Creation of acid rain
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Some causes of air pollutionCar emissions
 factories
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Air Pollution
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Effects on the environment can include
Health risks to living organisms
 All air pollutants return to the ground in some
form which effects the surrounding landscape

Air Pollution
Air Pollution
Air Pollution- Effects of acid rain
Air Pollution-Ozone depletion
Water Pollution

When pollutants are added to the water
supply
Oil spills
 Fertilizers (chemicals)
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Water Pollution
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When a water supply is contaminated, not
only are aquatic plants and animals affected,
but also any organism that needs that water
to survive
BP Oil Rig Explosion- 2010
BP Oil Rig Explosion- 2010
BP Oil Rig Explosion- 2010
Land Pollution
Humans produce hundreds of millions of solid
waste each year…..
Where does it go?
To a landfill!
To a landfill!
To a landfill!
Human Development/Population

Today there are more than 6 billion people
on the Earth

What does that mean for the planet’s biotic and
abiotic factors?
Less resources (food, water, land, etc)
 Loss of habitats

What if…….
An ecosystem of forests was destroyed
and replaced with a large shopping mall?
 Predict how this will most likely affect the
environment of the area.

Result in habitat destruction
 Decrease in animal population
 Increase pollution

What if……

As a city’s population grows, wooded
areas are replaced by housing
developments.

What effect will this most likely have on
the species in the wooded areas?
Many of the species will leave the area
 Some may die if there is no other habitat
available
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Pollution
Pollution- adding harmful substances or products into the
environment
The use of fossil fuels is the major cause of pollution
Air
Land
Smog
Solid wastes
Ozone Depletion Landfills
Acid Rain
Water
Oil spills
fertilizers