A. 300
B. 309
C. 206
D. 236

A. 23
B. 43
C. 46
D. 48

A. meat
B. potatoes
C. oranges
D. butter

A. cerebrum
B. cerebellum
C. medulla
D. pons

A. vitamin A
B. vitamin C
C. vitamin K
D. vitamin B

A. protozoan
B. virus
C. bacillus
D. None above

A. thickness of carbon
B. extent of coal deposits
C. age of an object
D. quantity of carbon

A. lungs
B. skin
C. nervous system
D. blood

A. fats
B. proteins
C. carbohydrates
D. hormones

A. complete the digestion of urea
B. destroy old red blood cells
C. maintain the normal composition of the blood
D. maintain a supply of glycogen