why is it generally preferable to use absorbance as a meaure of absorption rather than transmittance?

The answer is  a: x-rays—2 and ultraviolet rays—3.  hope i !

This question is rather vague, but i will try and answers it as best i can.start by being polite, then complement on the attributes that you like about that person. be friendly to her friends. don't be mean to anybody she knows, even if you really don't like them. be yourself, don't try to impress, just be yourself and hope that she likes you.

Is writing an option

The bacteria convert nitrogen-containing compounds into free nitrogen, while the decomposers convert free nitrogen into nitrogen-containing compounds.