Speed is an expression of how fast an object moves. An object's speed is the rate of the total distance it travels in a certain amount of time. Units of speed include miles per hour (mph), centimeters per second (cm/sec or cm/s), meters per second (m/sec or m/s), or kilometers per hour (kph or km/hr)
Answer:
The subunits of hemoglobin differ in size, shape, or charge.
Explanation:
The "rungs" of the DNA strand are made up of nitrogenous bases.
