Man has so much wisdom and power that the whole world has changed a lot.tall buildingsmodern agricultureaeroplanesatomic bombspaceshipmodern medicinemodern communicationWhat do you think of Have you ever considered how weak humans are compared with a volcano, hurricane or earthquake? Can you list some natural disasters?Boiling rock erupts from the crater ( 火山口); the lava( 熔岩) flows slowly down the mountain.gas liquid solid lava ( 熔岩) vapour, carbon dioxide, nitrogen ( 氮), sulphur ( 硫磺) bits of r
