Which of the following is a unit of speed?
a) h
b) nm
c) cm/y
d) km/s^2

Option c that it means cm/year.

Explanation:

Nm means nanometer, 1x10^9m

Km/s^2 is acceleration

h.. it may be height

as a general rule, scissors have blades less than 6 in (15 cm) long and usually have handles with finger holes of the same size. shears have blades scissors used to cut hair or fabric must be much sharper

come closer and become far apart and become steam/gas