Consider the following statements:,1. Nearly 99 percent of the total mass of the atmosphere lies within 30 km of the Earth’s surface.,2. The proportion of ozone in the atmosphere increases to a maximum at about 60 km from Earth’s surface.,Which of the statements given above is/are correct?

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Consider the following statements:,1. Nearly 99 percent of the total mass of the atmosphere lies within 30 km of the Earth’s surface.,2. The proportion of ozone in the atmosphere increases to a maximum at about 60 km from Earth’s surface.,Which of the statements given above is/are correct?






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