A. primary pollutant B. zero emission vehicles C. smog D. temperature inversion E. Clean Air Act F. sea-coal
1. have no emissions from tailpipes or gasoline
2. results from chemical reactions involving sunlight, air, exhaust, and ozone
3. scrubbers and electrostatic precipitators help industries meet the requirements of this 4. put directly into the air by human activity
5. a source of air pollution before modern times
6. atmospheric condition that traps pollution near the ground

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.

make   gliitsh plesea   !

i think the answer is 95 hope this

yes we can.   a lady urinates from her urethra.