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question_answer1) Forests are called as the 'lungs of nature" why?
question_answer2) What is Sewage?
question_answer3) Which one of the following is a biotic component of the environment?
question_answer4) Non-biodegradable waste is one of the major cause of land pollution. Which one of the following is a better option to get rid of non- biodegradable waste?
question_answer5) Under which one of the following groups, pills of vegetable should be kept?
question_answer6) We, human beings, depend on our ____ for all our needs
question_answer7) The process of gradual increase in the earth's temperature is called_______.
question_answer8) Select-the non biodegradable waste from the following.
question_answer9) Acid rain causes damage to___________.
question_answer10) Contamination unwanted substances into water is called _____.
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