The instrument shown in the figure is used for recording a natural phenomenon which is caused by______.
ABuilding of low pressure area over sea
BExcessive rainfall
CCollision of Earth's underground plates
DNone of these
The instrument shown in the figure is used for recording a natural phenomenon which is caused by______.
ABuilding of low pressure area over sea
BExcessive rainfall
CCollision of Earth's underground plates
DNone of these