There are about 16 cells present after 80mins.
Air pollution. Cleaner burning than other fossil fuels, the combustion of natural gas<span> produces negligible amounts of sulfur, mercury, and particulates. Burning</span>natural gas does<span> produce nitrogen oxides (NOx), which are precursors to smog, but at lower levels than gasoline and diesel used for motor vehicles.</span>
C. to determine the compatibility of antibodies of donor and recipient.
Answer:
There is no question to this text.
Explanation: