Question

Fill in the blanks.
of many gases.
The density of air is highest near the
The air in the atmosphere is a
The greenhouse effect is due to the increase of
Jet planes normally fly in the lower part of the
in the atmosphere.
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Answer 1

Answer:

Explanation:

near the troposphere                                                                                                  is a a mixture of gases                                                                                                  inrease of human activity                                                                                            of the stratosphere