Give
reasons.
(i) Ocean water is
salty.
(ii) The quality of
water is deteriorating.
Give reasons.
(i) Ocean water is salty.
(ii) The quality of water is deteriorating.
(i)
The ocean bodies and the seas contain
salty water. The water of oceans is salty or saline as it contains
large amount of dissolved salts. Most of this salt is sodium
chloride.
(ii)Though three-fourth of the Earth’s
surface is covered with water, almost 98% of it is unfit for use.
Oceans and seas, which constitute the major portion of the
hydrosphere, contain saline water. The fresh water reserves of the
Earth are mostly made up of ice-caps, ground water, lakes and rivers.
The quantity of water on Earth remains the same. It constantly
changes form and circulates between oceans, atmosphere and land.
Considering that the fresh water reserves remain constant and that
the world population rises day-by-day, it is important that we use
these water resources judiciously. However, due to factors like
deforestation, industrial and agricultural pollution of rivers and
lakes, wastage of water, pollution of ground water, etc., the quality
of water that is available to many people in this world today is not
suitable for human consumption.
(i) The ocean bodies and the seas contain salty water. The water of oceans is salty or saline as it contains large amount of dissolved salts. Most of this salt is sodium chloride.
(ii)Though three-fourth of the Earth’s surface is covered with water, almost 98% of it is unfit for use. Oceans and seas, which constitute the major portion of the hydrosphere, contain saline water. The fresh water reserves of the Earth are mostly made up of ice-caps, ground water, lakes and rivers. The quantity of water on Earth remains the same. It constantly changes form and circulates between oceans, atmosphere and land. Considering that the fresh water reserves remain constant and that the world population rises day-by-day, it is important that we use these water resources judiciously. However, due to factors like deforestation, industrial and agricultural pollution of rivers and lakes, wastage of water, pollution of ground water, etc., the quality of water that is available to many people in this world today is not suitable for human consumption.
