Tag: why conserve water

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Multiple choice evs water in our life where do we get water from? why conserve water uses of water

Percentage of fresh water in hydrosphere is

  1. Less than 10%

  2. Less than 25%

  3. Less than 3%

  4. Less than 17%
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Hydrosphere includes all water on the earth's surface, such as lakes, rivers, seas, oceans etc. The biggest reservoir of fresh water in hydrosphere are glaciers and polar ice that contain just over 2% of the available water and is fresh water. Thus the correct answer is option C.

Multiple choice evs water in our life where do we get water from? why conserve water uses of water

Percentage of total water found as fresh water is 

  1. 46%

  2. 32%

  3. 16%

  4. 2.5%
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Only 2.5% of total water present on the surface of the earth is present as freshwater which can be used for drinking and is potable. Rest of it is present in the form of seawater which is not salt-free and cannot be used for drinking. So, freshwater should be used very judiciously and used for drinking.

So, option D is the correct answer.

Multiple choice evs water in our life where do we get water from? why conserve water uses of water

Estuaries are considered as nutrient trap due to the mixing of

  1. River and sea water

  2. Pond and lake

  3. Lake and river

  4. Ocean and pond
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Estuaries are areas where freshwater from rivers meets and mixes with saltwater from the ocean, creating a nutrient-rich environment that acts as a trap for sediments and organic matter.