meteorology: a science that deals with the atmosphere and its phenomena and especially with weather and weather forecasting

geosphere: one of the shells or spherical layers within the earth delimited above and below by discontinuities

Climatology: the science that deals with climates and their phenomena

clima =region: an administrative area, division, or district

bio =life: the quality that distinguishes a vital and functional being from a dead body

Oceanography: a science that deals with the oceans and includes the delimitation of their extent and depth, the physics and chemistry of their waters, marine biology, and the exploitation of their resources

paleontology: a science dealing with the life of past geologic periods as known from fossil remains

atmosphere: the whole mass of air surrounding the earth

logy =theory: a plausible or scientifically acceptable general principle or body of principles offered to explain phenomena

graphy =description: an act of describing

atmos =vapor: : diffused matter (such as smoke or fog) suspended floating in the air and impairing its transparency

physical geography: geography that deals with the exterior physical features and changes of the earth