30. Which of the following is an
application of knowledge gained
from science?
A. Commercial production of
Penicillin
B. Digestion of food in the
stomach
C. Photosynthesis in plants
D. Production of urine by the
kidneys

C

Explanation:

Well last I checked You don't learn about commercial sell of penicillin. Plus the other answers are little sub areas of science. You learn more about plants than anything else.  

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.