Answer:
#1 false its difficult but also possible. #2 true and #3 False. the Salivary gland in the mouth make 1.5 liters a day
This is an example of facilitated diffusion.
Facilitated diffusion is the process of impulsive passive transport of molecules, it is the transfer of substances across a biological membrane from an area of higher concentration to lower concentration by means of carrier molecule.
Answer:
normalize making more reserch
