How many neutrons would
be found in
carbon-15 if it
were to exist?
Show your work.

List the two type of transporst that the cell in orde to transport molecules acroos the membrane

Why do lunar and solar eclipse not happen every month

What do electromagnetic waves carry? how are they produced through which media can they move? where do they transfer energy? what do they not transfer? what do mechanical waves carry? how are they produced? through which media can they move? where do they transfer energy? what do they not transfer?