NEET UG BIOLOGY MCQ: ENVIRONMENTAL ISSUES

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Consider the following statements
I. Algal blooms are formed by free floating algae
II. Algal bloom causes fish mortality and deterioration of water quality
III. Water hyacinth, the world’s most problematic aquatic weed is also called ‘Terror of Bengal’
Which of the statements given above are correct about algal blooms?

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Correct option: D

I, II and III

Option D (I, II and III) is correct because all three statements accurately describe algal blooms and the invasive species, water hyacinth.

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Supreme court of India has ordered the Delhi government to take measures to improve the quality of air. The government started to use _________________ in public fleet. The unfavorable alteration of environment due to human activities is termed as The polluting strength of sewage is usually characterized by its A lake near a village suffered heavy mortality of fishes with in a few days. Consider the following reasons for this.
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(ii) The area was sprayed with DDT by an aircraft
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