What is one of the main features of karst topography?
sinkholes
streams
springs
slumps

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

i might be wrong but i think its a. let me know if i’m right and have a good rest of your day!

i believe your answer would be c.. : )

answer; (b) clear with a slight blue tint;