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

When it is summer at the south pole, a. the northern hemisphere is tilted toward the sun. b. the southern hemisphere is tilted away from the sun. c. the northern hemisphere is tilted away from the sun. d. both the southern and northern hemispheres are tilted toward the sun.