Identify where the sun's rays strike earth most directly and least directly.

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

Acandle’s wick is the fabric string that holds the flame, and it burns down at a constant slow pace when the candle is lit. the wick is usually surrounded by wax. which is the most important property of covalent compounds that makes them useful for making candle wax? a low boiling point a low melting point a high boiling point a high melting point

Why is the bottom layer of a trophic pyrimid the