I need this for meteorology class and I can't find the answer. Please help When the saying mares tail and markerel scales start being said?

a ratio derived from the equality between two different units that can be used to convert from one unit to the other. information obtained from experiments, sometimes called experimental results. the part of the experiment that is affected by the independent variable.

gang gang . u. h. uhh.

just tell me if u want me to be serious