<span>Gas-powered vehicles, chemical refineries, industrial plants, vegetation, and forest fires all emit what into the atmosphere?
they admit carbon dioxide
which is co2</span>
Doses are difficult to control because of individual lung capacity’s
Public health services<span> may go unnoticed within a community because they are often (but not always) preventive </span>versus<span> reactive.</span>
: his or her sense of self-worth
