Question

What is the mass of fish, in kilograms, that one would have to consume to obtain a fatal dose

of mercury, if the fish contains 30 parts per million of mercury by weight? (Assume that all the

mercury from the fish ends up as mercury(II) chloride in the body and that a fatal dose is 0.20 g

of HgCl2.) How many pounds of fish is this?​

Answer 1

The layer of soil which is just below the top-soil is called B-horizon. It is also known as sub-soil. The sub-soil is made up of slightly bigger rock particles than that of top-soil. ... The sub-soil has very little humus (decayed organic matter).