A current of air, especially a natural one that moves along or parallel to the ground, moving from an area of high pressure to an area of low pressure. Surface wind<span> is measured by anemometers or its effect on objects, such as trees.</span>
Child mortality rate is the rate of infants or young children who die in a certain area.
Porosity basically measures how much free space there is between the parts, so what we are looking for in here is how much "white" there is.
We see that B has the most white, after this A, and after this C.
so from the options the answer is
<span>(3) Beaker B has the greatest porosity, beaker A has less porosity, and beaker C has the least porosity.</span>
