What is the maximum energy that can be transferred to an electron in a hard collision by a 25 mev
a) electron (according to convention)
b) positron
c) proton
d) alpha particle

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

hope this : d

a lot of it means it can be "burned" for energy and sold at one price. if it is scarce, the price will go up