A cold weather front<span> is defined as the changeover region where a </span>cold<span> air mass is replacing a warmer air mass. </span>Cold weather fronts<span> usually move from northwest to southeast. The air behind a </span>cold front<span> is colder and drier than the air in </span>front<span>.</span>
<span>Having standard written research protocols is the correct answer. ;)</span>
When two indistinguishable crickets are together, for example, and you only know they are different because of their mating song. A behavioral isolational cricket would conduct only that with another cricket with similar mateship behavior.
BTW you should probably put in the options.
