Jill has a beaker. in this beaker there are two layers. the phone top layer is transparent with a yellow tint to it, and the bottom layer is transparent and clear. jill decides that the bottom layer is probably water. what is the top layer

In the given case, most probably the top layer is of oil.  

As oil is not soluble in water, it will float on the top of the water surface, in the given case it is the beaker. The oil will always float on top of the water, as it is less dense in comparison to water. The water and oil do not mix as the molecules of water are more fascinated with each other than in comparison to the molecules of oil.  

As water is polar and oil is nonpolar, their molecules are not attracted to each other.  

just here for the other one bc they put up with u

endo:

regulates body hormones, aldosterone, vasopressin

neural:

signal, regulates body using electric signals, reflex

endo has to do with hormones; aldosterone and vasopressin are both hormones. i also had this question and got it right : d