To measure a vector is to characterize both its direction (in one form or another) and a value (usually, a number). For example, velocity of a car moving on the road is a vector and, to measure it, we have to specify its direction (e.g. North or at angle 20 degrees from the North) and value (e.g. 40 m/sec).
Iodine would be your answer!!!
B
All cells new oxygen and blood is a way for them to get it
They are called Periods. Lesser known as series
I know CL is chlorine and NA is sodium.
