A. 100
B. 400
C. 1000
D. 4000
A. Blood
B. Lungs
C. Kidney
D. Pancreas
A. Methane
B. Nitrous oxide
C. Carbon dioxide
D. Hydrogen
A. Oxygen and hydrogen
B. Oxygen, hydrogen, acetylene and nitrogen
C. Oxygen, acetylene and argon
D. Oxygen and acetylene
A. Medicine
B. Fertilizer
C. Salt
D. Glass
A. Copper
B. Chromium
C. Lead
D. Cadmium
A. Black
B. Grey
C. Eigengrau
D. None of these
A. Aluminum oxide
B. Calcium carbonate
C. Calcium sulphate
D. None of these
A. Proxima centurai
B. Alpha scorpii
C. Beta orionis
D. Vega
A. Magnesium and vitamin d
B. Iron and vitamin b
C. Iron and vitamin c
D. Calcium and vitamin c