How will the excretory system respond when an animal is thirsty?
a. by relaxing the striated muscles
b. by retaining body fluids
c. by absorbing heat from the digestive glands
d. by releasing hormones

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link:

if, i suppose that a bee stings me swinging my hand away from a bee. then that if, i persist patient when a bee or wasp areas on your surface to investigate a scent or to take h2o and i secreting heavily, the bug ultimately will move of its personal agreement. if i don't need to set for it to disappear, lightly and gently wipe it off with a part of the paper.

not: both offer magnification to the atomic level.