Q. They remove many nitrogen oxides, carbonmonooxides and unburnt hydrocarbons, is

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Q. Large carnivores which rely for food on small carnivores are known as

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Q. Sulphurdioxide causes

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Q. Herbivores such as wild beests and zebra live in vast herbs on the

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Q. Oxides of Nitrogen causes what health problems in humans?

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Q. Herbivores are known as

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Q. What health problems are caused by lead?

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Q. What physical characteristics that makes pollutants hang around in the atmosphere instead of dispersing quickly?

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Q. Green plants are called

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Q. Plant eating animals are known as

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Q. Which largest cities of the world are famous due to their persistently high level of air pollution and photochemical smog?

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Q. In which areas the carnivores live in a small groups?

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Q. Oxides of Nitrogen causes

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Q. The primary producers has the ability to manufacture their own food by using

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Q. Animal eating plants are known as

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Q. What is the source of ground ozone?

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Q. The primary consumers are eaten by

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Q. Nutrients and energy absorbed by plants are passed along a chain of living things which is called

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Q. What produces high level of ground ozone?

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Q. The microorganism collectively known as

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