how human activities affect the environment.

3. INTRODUCTION
HUMAN IMPACT ON THE ENVIRONMENT OR
ANTHROPOGENIC IMPACT ON THE
ENVIRONMENT INCLUDES:
impacts on biophysical environments,
biodiversity and
other resources.
The term anthropogenic means an effect
or object resulting from human activity.

4.  FACTORS:
HUMAN IMPACT ON
ENVIRONMENT
Factors contributing to ENVIRONMENTAL LOSS are:
 DEFORESTATION,
 OVER-POPULATION,
 WASTE,
 POLLUTION,
 OVERUSE/WASTAGE OF NATURAL RESOURCES,
 ENERGY INDUSTRY etc....

5. DEFORESTATION

6. DEFORESTATION
 Deforestation, clearance or clearing is the removal of a forest or stand of
trees where the land is thereafter converted to a non-forest use.
 Deforestation occurs for many reasons:
 used or sold as fuel
 used as pasture for livestock
 plantations of commodities
 Settlements, etc.

7. OVER-POPULATION
https://www.youtube.com/w
atch?v=B7lrCMoZKUU

8. EFFECTS OF OVER-
POPULATION (negative).
 Human overpopulation occurs if the number of people in a
group exceeds the carrying capacity of a region occupied by
that group.
 Environmental pollution
 Loss of habitat
 Over usage of resources
 High farming practices (soil degradation)
 Inadequate clean drinking water and sanitation
 Deforestation (creating a living space)

9. WASTE
Wastes is a term used for
unwanted materials.

10. Examples includes:
 municipal solid waste (household trash/refuse),
 hazardous waste
 wastewater (such as sewage, which contains bodily
wastes, or surface runoff)
 radioactive waste, and others.
These examples of wastes affect our environment when
dumped in wrong places e.g. near water sources.

11. POLLUTION

12. WATER POLLUTION
 Water pollution is the contamination of
water bodies.
 Water pollution occurs when pollutants
are discharged directly or indirectly into
water bodies without adequate
treatment to remove harmful
compounds.
 Water pollution affects plants and
organisms living in these bodies of water.

13. AIR POLLUTION
 Air pollution is a mixture of solid particles and gases in the air.
Car emissions, chemicals from factories, dust, pollen and mold
spores may be suspended as particles. Ozone, a gas, is a major
part of air pollution in cities. When ozone forms air pollution, it's
also called smog. Some air pollutants are poisonous.
 CAUSED BY :
 Smoke from factories
 Producing electricity
 Vehicles on the road
 Burning of fossil fuels etc.

14. LAND POLLUTION
 Land pollution is the deterioration (destruction) of the
earth's land surfaces, often directly or indirectly as a
result of man's activities and their misuse of land
resources
 Examples:
 Litter found on the side of the road.
 Illegal dumping in natural habitats.
 Damage and debris caused from unsustainable mining
and logging practices.
 Oil spills that happen inland.

15. OVERUSE OF
NATURALRESOURCES
 the depletion of natural resources has
become a major focus of governments
and organizations such as the United
Nations.
The depletion is caused by
Electricity production
 Mining,
 petroleum extraction,
 Fishing,
 Forestry etc..

16. AND NOT FOR

18. HOW?
 RECYCLING
 REUSE
 REPLACING (E.G. AFORESTATION)
 EDUCATING PEOPLE TO WISELY UTILIZE THEM IN
ORDER FOR THEM TO RECOVER
 ETC.

19. GREENHOUSE EFFECT AND
GLOBAL WARMING
 CO2, water vapour, and other greenhouse gases reflect infrared
radiation back toward Earth; this is the greenhouse effect
 This effect is important for keeping Earth’s surface at a habitable
temperature.
 Due to the burning of fossil fuels and other human activities, the
concentration of atmospheric CO2 has been steadily increasing.
 Increased levels of atmospheric CO2 are magnifying the greenhouse
effect, which could cause global warming and climatic change.
 Global warming can be slowed by reducing energy needs and
converting to renewable sources of energy

20. HOW GLOBAL WARMING
AFFECT US?
 Temperature increases will have significant impacts
on human activities, including:
 where we can live
 what food we can grow
 how and where we can grow food
 where organisms we consider pests can thrive

21. NEED OF
CONSERVATION
 Conservation biology is the scientific study of the
nature and status of Earth's biodiversity with the
aim of protecting species, their habitats, and
ecosystems from excessive rates of extinction.
 Habitat conservation is a land management
practice that seeks to conserve, protect and
restore, habitat areas for wild plants and animals,
especially conservation reliant species, and
prevent their extinction, fragmentation or
reduction in range.

23. THANK YOU

24. REFERENCES
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Soc, L. (2013) Human impact in the environment. Available from slide share at
https://www.slideshare.net/lucylin13/human-impact-in-the-environment (accessed on 17 September
2017).
Nguyen, H. (2014) Human activities that affect natural ecosystems. Available from slide share at
https://www.slideshare.net/waynesteven545/human-activities-that-affect-natural-ecosystems
(accessed on 17 September 2017).
Vane, R. (2014) Human impact on environment. Available from slide share at
https://www.slideshare.net/lavaneparra/human-impact-on-environment-41073372?qid=26bab0ba-
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Sackl, X. (2008) Human Impact On The Environment. Available from slide share at
https://www.slideshare.net/sacklax40/human-impact-on-the-environment-presentation (accessed on
17 September 2017).