Which of the following best describes the speed of an object? A) 15 miles B) 15mi/h C) 15mi/h East D) 15 miles East

B) 15mi/h

Explanation:

In general, you can just look at a road sign and see that usually, that's how the speed limits are provided.

this protocol provides a detailed procedure for nucleoprotein extraction from cultured cells and tissues in an efficient manner.

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.