Answer:
The volcano continued to spit ash through the end of April, forming two large craters which eventually merged into one.
Doldrum is the region of very calm and little or no wind on either side of the equator. Doldrums which is also called convergence zone is an equatorial region of the Atlantic ocean which has sudden storms and light unppredictable winds. In addition doldrum is abelt around the earth near the equator where the sailing ships sometimes get stuck on windless water.
R-22 contains chlorine.
<u>Explanation:</u>
The refrigerant R22 is mainly used for the heat absorption and removal from the space. The main application that uses this refrigerant are heat pumps, car AC, refrigerating machines, central AC, etc. It can also be referred as hydrochlorofluorocarbon 22 or HCFC 22.
Hydrogen, fluorine, carbon and chlorine are the main ingredients that is present in HCFC refrigerants.In the refrigerants like, R-123 and r-22, the potential of ozone depletion is more than 0. The presence of chlorine is more in chlorofluorocarbon(CFC). R12 is a CFC refrigerant. The refrigerants that do not contain any chlorine are R-134a, R-410A. refrigerants have an ozone depletion potential of more than zero .