What is characteristic of the strong nuclear force?
a. it exists only within electrons.
b. it acts over a very small distance.
c. it is responsible for most chemical reactions.
d. it was discovered in 1882.

answer: the answer is a

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