Which statements about velocity are true? Check all that apply.
O A. The symbol for velocity is v.
B. To calculate velocity, divide the change in the distance by time.
O C. The SI units of velocity are m/s.
O D. For velocity, you must have a number, a unit, and a direction.

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.

football

explanation:

because it is

if the temperature drops and becomes cool

then the atmosphere can be freezing as the water vapor in the air is at maximum (100%) and can be severely cold

also can be snowing lightly as the moisture in the air will start to solidify

and btw this is not chemistry but