Four; the upper atmosphere, the atmosphere, the mantle, and the core.
Answer:
All the wavelengths can not reach the earth's surface always.
Explanation:
Most of the time the atmosphere absorbs the Infrared radiation from the space. For this reason, infrared radiation can not reach the earth always. It is basically absorbed by the Co2 and water vapor present in the atmosphere.
All three domains include unicellular organisms, archaea, bacteria, and eukarya.
1) all of the above
2) rocketry
3) 1
4) not sure about this one because magnitude of one was the brightest then 2, then 3. 6 was the least brightest and 6+ or -1 or 0 or you could say, below 1 did not exist at that time..