_________ means a line on a map connecting points having the same atmospheric pressure at a given time or on average over a given period.
			A. Isobar 
B. Isobath
C. Isohel
D. Isohyet
A. Isobar 
B. Isobath
C. Isohel
D. Isohyet
A. vitamin B-6
B. vitamin B-9
C. vitamin B-2
D. vitamin B-12
A. Positron
B. Proton
C. Alpha particular
D. None of these
A. Osteoblasts
B. Osteoclasts
C. Osteocytes
D. All of these
A. Vitamin B-1
B. Vitamin B-2
C. Vitamin B-6
D. Vitamin B-12
A. Fluorine
B. Bromine
C. Sodium
D. Oxygen
A. Ni 
B. Pb
C. Cu
D. Pt
A. Noble Prize
B. UNESCO peace prize
C. Right livelihood prize
D. All of these
A. 112
B. 118
C. 114
D. 116
A. vitamin B-1
B. vitamin B-2
C. vitamin B-3
D. vitamin B-6