<span>The most common contaminant to be found in drinking water is microorganisms, nitrate and arsenic. Though water quality and monitoring has come a long way over the past few years, viruses, bacteria and protozoa like giardia lambia can be found in the water and often leads to wide spread illnesses.</span>
Answer:
The synthesis of complex molecules in living organisms from simpler ones together with the storage of energy; constructive metabolism.
Explanation:
Answer: Rock B is a Igneous rock.
