Meteorology is the study of_____________.
A. Seasons
B. Atmosphere
C. Air and sounds
D. Winds and cloud » Read More…
For proper formation of teeth, __________ is essential.
A-iodine
B-copper
C-fluorine
D-iron
Carrot is good source of Vitamin _______.
A. Vitamin A
B-Vitamin B
C-Vitamin C
D-Vitamin D » Read More…
The principal constituent of the atmosphere of the Earth is____________.
A. Oxygen
B. Carbon
C. Hydrogen
D. Nitrogen
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