Which is a characteristic of all mixtures? a) their composition can be varied
b) they are heterogeneous c) their composition is in a define ratio d)their homogeneous

hail is a solid form of precipitation composed of large, layered ice particles called pellets that often have spherical shapes. this phenomenon occurs during thunderstorms in the could type known as cumulus

hope this you out ^w^

b.transmitters send radio waves, and receivers capture radio waves.

power out to power in less than 100%