The convergent boundary or just convergent
<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>
<span>c. regular exercise has little impact on maintaining peak performance after age 30</span>
