NATURAL RESOURCES

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

ABOUT ??

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

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…..

LAND BREEZE / SEA BREEZE

AIR POLLUTION

AN INCREASE IN THE CONTENT OF THE HARMFUL SUBSTANCES IN AIR……

EFFECTS IT LEADS TO MANY RESPIRAT-ORY PROBLEMS IT LEADS TO ACID RAIN.

ACID RAIN

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

WATER POLLUTION ?????

“THE ADDITION OF UNDESIRABLE SUBSTANCES TO WATER IS CALEED

WATER POLLUTION”

WATER

POLLUT ION

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

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.

NITROGEN IN ATMOSPHERE

NITROGEN FIXATION

PROTOPLASM(GREEN PLANTS)

NITRATES

PROTOPLASM

(ANIMALS)

AMMONIA NITRIFICATION

ATMOSPHERIC AND INDUSTRIAL FIXATION

NITRITES

NITRIFICATION

DENITRIFICATION

Nitrogen cycle