I would say A,B and D. The spectra allow for the determination of isotopic signatures of samples, the masses of particles and of molecules and thus the density, and most likely the energy levels of atoms. The energy given off by the elements allow these qualities and quantities to be determined.
Answer:
I don't understand the question
Explanation:
what is your name
Convection currents can happen in liquids and gases. For example when air is heated it becomes less dense and rises. This means that cooler more dense air comes down and is also heated rising up above more cooler air etc. This creates a convection current.
Here is a diagram of a hot water tank heater:
(sorry it isn't that great I did it myself just now)
Answer: is considered to be cruel in the case that it is pre-meditated or intended
Answer:
specialized if you add one more I cause I'm pretty sure there is supposed to be one more i.