Ecologists discovered that were dying trout in a stream that ran through some farmland where nitrogen fertilizer was used on the crops. how might you explained what happened?

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

d we did this already