Which of the following is true concerning sources of water pollution?
a. mine wastes and heavy metals become water pollution through storm water runoff.
b. biodegradable materials like food, wood, and leaves are not considered pollution.
c. petroleum byproducts and fuels end up as pollution principally from oil spills.
d. pesticides and herbicides do not commonly become water pollutants.

Mine wastes and heavy metals become water pollution through storm water runoff.

Explanation:

Mine wastes affect surface water quality and quantity groundwater quality and quantity, soils, air quality,etc.

The Erlenmeyer Flask was introduced in 1861 by German chemist Emil Erlenmeyer and is shaped like a cone. This has a triangular shape and mouth wide for it to be easier to pour and store liquids. The Volumetric flask is used for preparing liquids with volumes of high precision. It has a pear-shaped body and a long neck with a circumferential fill line. The Filter Flask is also known as the A Büchner flask. It is like the Erlenmeyer but this one is thick-walled and has a special arm in the side. It is used for filtering liquid.  

Explanation: