ANSWERS: 2
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Eventually the accelerating force of the body and the air resistance will be equal. The body reaches it's terminal velocity and stops accelerating. The air resistance is the equal and opposite reaction to the acceleration.
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The Earth pulls the body downward and the body in free fall accelerates towards Eerth. This force of gravity from Earth on the body has its reaction counterpart : the upwared pull of the body acting on Earth. As the body accelrates downward, the planet Earth as a whole accelerates upwards, towards the body. Since mass of Earth is huge, this latter acceleration is miniscule and in practice un-noticeble.
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