Nitrogen and oxygen are the main constituents of the atmosphere plus water vapour near the surface. Carbon dioxide is present in smaller amounts butgl of course it can have a profound influence on the climate as global warming has shown, Greenhouse gases include water vapour, carbon dioxide, methane and nitrous oxide.
A cold front is the transition zone where a cold air mass is replacing a warmer one, (They move more slowly than warm front's.) Others are Characteristics of cold front's and they move faster than warm.
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<span>The study of how traits are inherited though the interaction of alleles is defined as genetics and it began in the 1850's. Gregor Mendel was the first scientist to study genetics. </span>
It brought destroyed homes and no electricity.
