In a chemical laboratory, a mortar and pestle function is to decrease surface area of a solute. The correct answer is B.
<span>Associating the need of surgeon in practice , we write a software of human body biocycle law . this software can provide a science reliance in the time selection of surgical operation plan to the main surgeon
(just an example^)</span>
Please add you assignment.
As the O3 suggests, the Ozone molecule is made up of 3 Oxygen atoms.