1. NATURAL RESOURCES

2. LAND,AIR,WATER ARE ALL PROVIDED BY
NATURE ARE CALLED NATURAL
RESOURCES….
ABOUT ??

3. HYDROSPHERE: THE LIQUID PART OF EARTH
COMPRISING WATER IS CALLED HYDROSPHERE.
LITHOSPHERE: THE OUTER CRUST OF EARTH
COMPRISING LAND IS CALLED LITHOSPHERE.
ATMOSPHERE: THE AIR ACTING LIKE
BLANKET FOR THE WHOLE EARTH IS CALLED
ATMOSPHERE.
BIOSPHERE: THE LIFE ZONE WHERE
ATMOSPHERE, HYDROSPHERE AND
LITHOSPHERE INTERACT IS CALLED BIOSPHERE.
Zones of earth

4. CAUSES :-
• UNEVEN HEATING OF THE EARTH
• ROTATION OF THE EARTH
• PRESENCE OF MOUNTAIN RANGES
MOVEMENT OF AIR : WIND
THE MOVEMENT OF AIR FROM ONE
REGION TO OTHER CREATES WIND…..

5. LAND BREEZE / SEA BREEZE

6. AIR POLLUTION
AN INCREASE
IN THE
CONTENT OF
THE
HARMFUL
SUBSTANCES
IN AIR……
EFFEC
TS
 IT
LEAD
S TO
MANY
RESPI
RAT-
ORY
PROB
LEMS IT
LEAD
S TO
ACID
RAIN
.

7. When the unburnt carbon particles,
nitrogen oxide and sulphur oxide
get dissolved in rain water, it gives
rise to acid rain.

8. WATER POLLUTION ?????

9. MAIN PROBLEMS OF POLLUTION IN
THE COUNTRY THAT NEED TO BE
ADDRESSED ARE :-
o POLLUTION FROM DOMESTIC SEWAGE
o HIGH RATES OF DRINKING WATER AND
DRAINAGE
GENERAL LACK OF SEWAGE TREATMENT PLANTS

10. SOIL FORMATION :-
THE SUN : THE ROCKS EXPAND DURING DAY DUE TO
HEATING BY SUN , AT NIGHT THE CONTRACT BY COOLING AT
NIGHT. DUE TO THIS EXPANSION AND CONTRACTION ROCKS
BREAK INTO SMALLER PIECES.
WATER :
• WHEN WATER GET INTO CRACKS FORMED DUE TO UNEVEN
HEATING.IF THIS WATER LATER FREEZES, IT CAUSE CRACKS
TO WIDEN AND THE ROCKS BREAK.
• FLOWING WATER WEARS AWAY EVEN HARD ROCKSOVER
LONG PERIODS OF TIMETHE ROCKS RUB AGAINST EACH
OTHER AND IT RESULTS IN ABRASION OF ROCKS INTO
SMALLER PIECES.
• WIND: WIND ERODES THE SMALLER ROCKS JUST LIKE
WATER AND THEY FORM SMALL PARTICLE, SOIL.
• LICHENS GROW ON THE SURFACE OF ROCKS AND EXCRETE
A SUBSTANCE THAT CAUSE ROCK SURFACE TO POWDER
DOWN AND WHEN PLANTS GROW ON ROCKS THE ROOTS
FORM CRACKS AND LATER BREAK DOWN.

11. NITROGEN IN
ATMOSPHERE
NITROGEN
FIXATION
PROTOPLASM
(GREEN PLANTS)
NITRATES
PROTOPLASM
(ANIMALS)
AMMONIA NITRIFICATION
ATMOSPHERIC AND INDUSTRIAL
FIXATION
NITRITESNITRIFICATION
DENITRIFICATION