The micrometer (1μm) is often called the micron. (a) how many microns make up 1 km? (b) what fraction of a centimeter equals 1 μm? (c) how many microns are in 1 yd?

explanation:

earth's surface is mainly heated by the absorption of infrared radiation from the sun.

evaporation occurs because molecules in liquid water are warmed ( usually by the sun) and vibrate quicker, becoming less dense and rise.

condensation occurs because molecules in water vapor are cooled and therefore vibrate more slowly thus becoming more dense and eventually fall to earth.

lines of equal barometric pressure on a weather map are called: isobars : lines of equal temp on a weather map are called: isotherms.​

resonant frequency

explanation:

considering the bohr theory, the type of connection that requires the transfer the answer conuldn't be right