Which of the following statements about air is true? .
a.. air is not a source of resistance..
b.. air has mass, but not inertia..
c.. air is not affected by human movement..
d.. none of these statements are true.

Correct answer choice is :

D) None of these statements are true.

Explanation:

Air is the blend of gases which forms the Earth's environment and which we breathe. The Earth is covered in a coating of air described the atmosphere, which is made up of various layers of gases. The Sun is much warmer than the Earth and it provides off rays of light energy that move through the environment and reach the Earth's surface.

the moon affects the earth gravitation ally, causing certain motions of that body and also producing tides in its ocean and atmosphere. the tidal wave in our atmosphere is, however, far too minute to be an effective cause in any known meteorological phenomenon.

explanation:

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it