Answer:
Look up metric system prefixes
Explanation:
mm- Prefix milli, Unit meter
kg- Prefix kilo, Unit gram
hs - Prefix hecto, Unit second
cm - Prefix centi, Unit meter
mL - Prefix milli, Unit liter
g - Prefix none, Unit gram
um - Prefix micro, Unit meter
KJ - Prefix kilo, Unit joule
L - Prefix none, Unit liter
hm - Prefix hecto, Unit meter
dL - Prefix deci, Unit liter