2. •The loss and
displacement of the
earth’s fertile topsoil.
•One of the most critical
environmental problems
in the world today.

3. •Physical phenomena
•Human intervention

4. • Rainfall
depending on its intensity,
duration and distribution
• Wind
specially strong gales which
easily blow dry powdery soil and
slope of the land which facilitates
the soil run-off.

5. •Deforestation
•Overgrazing
•Over cropping

6. •Deterioration of agricultural
land
•Increase of flood
occurrence
•Reduced water supply
•Siltation of reservoirs,

7. •Destruction of
buildings, roads and
public works.
•Depletion of wild life
and other natural

9. • LOGGING
2 FUNDAMENTAL WAYS
1.Selective cutting
loggers harvest only those
mature trees that produce the most
valuable timber and they leave the
rest of the forest untouched

10. 2. Clear cutting
all the trees in an area are
cut. Small logs are used to
manufacture paper, and large
logs ate sown into boards.

11. •FARMING
as the population
increases, there is no longer
enough land to leave
croplands fallow until the full,
natural fertility can be
established.

12. •CATTLE RANCHING
It is threatening rainforest
systems. Forest lands ate
cleared yearly to be converted
to cattle ranching operations
which, in turn, destroy the soil.

13. •GATHERING WOOD FUEL
•HYDROELECTRIC
DEVELOPMENT
•URBANIZATION

14. •SURFACE MINING
types of environmental
impact of mining
1. Direct impact
2. Indirect impact

15. •HIGHWAY CONSTRUCTION
•STREAM CHANNELIZATION
•JETTIES
•To assure boatmen calm
water for docking, rock
barriers ate sometimes
constructed offshore.

16. •Is the method or process of
supplying/applying chemical
compound as a source of one
or more of the essential plant
food elements.

17. •Is the method or process of
supplying/applying chemical
compound as a source of one
or more of the essential plant
food elements.

18. •The introduction of high-yield
green varieties on a
commercial scale was
developed in the middle and
late 1960’s.

19. •A re a pest-killing agent
(Latin word CIDE means to
cut or kill). Defined by the
Fertilizer and Pesticides
Authority (FPA).