Science

Pollution of Air and Water

Question:

Why does the increased level of nutrients in the water affect the survival of aquatic organisms?

Answer:

An increase in the level of nutrients in a water body leads to an excessive increase in the population of algae in the water body. When these algae die, they serve as food for decomposers. A lot of oxygen is utilised in this process, consequently leading to a decrease in the level of oxygen dissolved in the water body. This in turn causes fishes and other aquatic organisms to die.
previuos
next

Questions and Answers

Pollution of Air and Water

Q 1.

You are a member of the municipal body of your town. Make a list of measures that would help your town to ensure the supply of clean water to all its residents.
Answer

Q 2.

At an individual level, how can you help reduce air pollution?
Answer

Q 3.

What are the different ways in which water gets contaminated?
Answer

Q 4.

Explain the differences between pure air and polluted air.
Answer

Q 5.

Describe the 'Greenhouse Effect in your own words.
Answer

Q 6.

Explain circumstances leading to acid rain. How does acid rain affect us?
Answer

Q 7.

Why does the increased level of nutrients in the water affect the survival of aquatic organisms?
Answer

Q 8.

Prepare a brief speech on global warming. You have to deliver the speech in your class.
Answer

Q 9.

Clear, transparent water is always fit for drinking. Comment.
Answer

Q 10.

Describe the threat to the beauty of the Taj Mahal.

Answer