In India, the Air (Prevention and Control of Pollution) Act came into force in 1981, but was amended in ________ to include noise as an air pollutant.
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Which of the following are the smaller planets than the size of the Earth?
The longest day of the year in the Northern Hemisphere occur on _____.
Non-green plants lack which of the following?
Ananas comosus is the scientific name of ________.
Who among the following was sworn in as the Chief Minister of Manipur in 2017?
The outermost layer of the earth's atmosphere is _______.
Haustoria or sucking roots are found in which of the following?