Why can't you see the wave-like motion of a baseball, or a cat, or a plane?

What layer of the atmosphere is directly above the troposphere?

Long term exposure to waves can cause sunburns and skin cancer. a) visible b) infrared c) gamma rays d) ultraviole

The form of energy that can move from place to place across the universe is (answer) on earth, the main source of this energy is (2nd answer) first blank; a) gravitational potential energy b) radiant energy c)thermal energy d) vibrational energy second blank; a)lightning b) the moon c) the sun d) the wind