MCQs: Short and simple food chains are rare in the world and may be found in simple ecosystems like:
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MCQs: An animal which captures and readily kills live animals for its food is known as:
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MCQs: Desertification is:
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MCQs: An association between two organisms belonging to different species, which live together for mutual benefit or on partner gets benefit and other, is neither benefited nor harmed is known as:
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MCQs: Symbiotic association in which both the partners get benefit and neither cansurvive without the other is called:
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MCQs: A striking example of ______ is that of a ruminant animal such as a cow and the bacteria that live in its gut:
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MCQs: A symbiotic association between fungus and roots of higher plants is known as:
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MCQs: An association between a fungus and an alga is known as:
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MCQs: The symbiotic association in which one partner gains benefit without benefiting or harming the other is known as:
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MCQs: Barnacles attached to the backs of whales and turtles, get a free ride to better riding places, in an example of:
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MCQs: The back and forth movements of chemical elements, between organisms and environment along characteristic circular paths and known as:
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MCQs: Which element is vital to plants and animals for the synthesis of proteins and nucleic acies?
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MCQs: The earth's atmosphere contains over _____ % by volume of nitrogen gas:
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MCQs: Nitrification takes place only in well aerated soils because the bacteria responsible for it are:
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MCQs: The transfer of food energy from the source in plants through a series of organism with repeated stages of eating and being eaten is known as:
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MCQs: Non-renewable environmental resources include various metals non-metalic minerals and
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MCQs: Thick clouds of smoke containing soot and other particles coming out of the factories cause health problems for nearby people. Such as irritation of eyes and:
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MCQs: Carbon monoxide is a poisonous gas, 1% of which in the air can kill a person in:
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MCQs: Acid rain brings with it:
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MCQs: Certain cities of Pakistan have been subjected to tremendous air pollution due to increased:
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