What is the term for a thunderstorm that forms a line that can extend
hundreds of miles?
I need help with this one too but fast please help and hurry

Multi-cell Line (Squall Line)

Explanation:

Sometimes thunderstorms will form in a line which can extend laterally for hundreds of miles. These "squall lines" can persist for many hours and produce damaging winds and hail.

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.