A subtance with a pH below 7 and
<span>a substance that tastes sour</span>
<span>advancing mass of warm air, in particular, the leading edge of the warm sector of a low-pressure system.</span>
B) Ecosystem - which includes the living communities and nonliving factors in an environment
<span>The person needs to be wearing a dosimeter badge. This is used as a way of measuring the overall radiation that has collected upon the person in the nuclear environment. While the badge does not actually protect against the radiation, it does give the wearer information about whether or not they are in a potentially unsafe situation.</span>
