14. Causes of Soil Pollution
-- When mountain is denuded , there are no
more roots to absorb rainwater or to hold
the soil. During heavy rains, water rushes
down and causes floods in lowlands. The
soil in the mountain is also carried down or
eroded to the low lands and deposited in
rivers, streams , and oceans.
-- Too much erosion can carry away soil
that we need.
15. Causes of Soil Pollution
1. Chemicals and wastes from factories,
hospitals, farms are dumped into the
soil.
-These chemicals and wastes make soil
poisonous for plants, animals and
people.
16. Causes of Soil Pollution
2.Garbage or solid
wastes from
homes and wet
market , which
are not disposed
of properly
17. Causes of Soil Pollution
3.Excessive use of fertilizers
and insecticides in
farming:
- to increase their harvest
- To get rid of pest
- These chemicals destroy
organisms that help renew
the soil. The soil becomes
barren or unproductive
18. Causes of Soil Pollution
4.Wastes from mines
-metals are processed so
they can be used to make
jewelry, wires , coins , and
other metallic objects
-metal processing produces
wastes water that flows
into the land and rivers .
Soil becomes damaged
and plant cannot grow in
it.
19. Effects of Soil Pollution
1.Effects of pollution
on plants
a. young seedlings
decay even before
they appear above
the soil surface.
20. Effects of Soil Pollution
b. roots decay or
wither . This
interferes with the
supply of water in
the stems and
leaves so the plants
eventually die.
21. Effects of Soil Pollution
c. plants will wither and
die since polluted soil
interferes with the
supply of nutrients
needed for plants
growth and
development.
22. Effects of Soil Pollution
2. Effects on humans and
other animals
- human depend and other
animals depend on plants
for food. If plants are
affected by pollution,
people and other animals
can also get sick and may
eventually die.
23. Effects of Soil Pollution
2. Effects on humans and
other animals
- human depend and other
animals depend on plants
for food. If plants are
affected by pollution,
people and other animals
can also get sick and may
eventually die.
24. If we want to continue
enjoying abundant food ,
lumber , and other plant
products, we need to take
care of our soil.
Without soil , there will be
no trees and plants.
25. There is a need for soil
conservation.
Soil conservation is caring
for and using soil wisely to
prevent soil erosion and to
maintain the quality of the
soil.
26. Soil Conservation
1.Plant trees
- planting trees especially
along the slopes , to
reduce soil erosion. The
roots grow deep into
the soil; thus , the soil
particles become firmer
and stronger.
27. Soil Conservation
2.Dispose garbage proeprly
-segregate
a.biodegradable
(discarded food,fruits and
vegetables)
b.non-biodegradable –
garbage that may be re-
used or recycled(plastic
,bottle, and cans
31. Soil Conservation
4. Help minimize chemical pollutants
in soil
- join clubs of environmentalists
- inform factory owners about the
ills of polluting soil
-give away leaflets urging the
factory owners to stop polluting
the soil
32. Soil Conservation
5.Avoid excessive use of chemical
fertilizers
- make the soil extremely acidic or
salty
- condition is harmful to plant life
