As for the first part, Cost, Radiation exposure to humans, No water or heat, and unfit soil. As for the second, Astronomers, Botanists, and obviously your fair share of rocket scientists and math matitions for the way up.
What poem are u talking about??
idfk jekekke hsjsjjs just weekends I'm sorry I just need to answer a math question and its making me awnser
The shorter the wavelength, the higher the pitch.
B. This is because it is almost in a listed format.