I need help quickly please!!! When air masses collide, changing weather patterns often occur at the boundaries between air masses. Meteorologists refer to this as a .

(Sorry if I got the subject wrong)

uranium fissions/breaks up giving out energy and neutrons

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.

an electric circuit

wavelegth as in spectrum red oygbiv