The average lifespan of circulating platelets is 200 h. O An hour is a unit of volume.
An hour is a unit of temperature.
O
An hour is a unit of length.
An hour is a unit of time.
O
Answer plz_

As we know, lifespan is something that is measured in time, and here the used unit " hour " is a unit of time.

Therefore, the correct choice is ~

you did not give any options thus this is the best answer i can give to you with this little information you have given

> they are both natural and not man made

> they can be tracked and predicted by the right tools

-love shrooms