What is the main structural component of the Earth?
ক) Nitrogen
খ) Hydrogen
গ) Carbon
ঘ) Iron
Related Questions
ক) Sulphate
খ) Carbonate
গ) Phosphate
ঘ) Nitrate
ক) Copper
খ) Zinc
গ) Aluminium
ঘ) Lead
ক) Pole star
খ) Direction of airflow
গ) Latitude
ঘ) Ocean current
ক) between 40º and 47º South
খ) between 40º and 47º North
গ) between 61º and 67º South
ঘ) between 61º and 67º North
ক) +5 V
খ) -5 V
গ) +12 V
ঘ) -12 V
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