Physical geography includes the following fields: geomorphology, which uses geology to study the form and structure of the surface of the earth; climatology, which involves meteorology and is concerned with climatic conditions; biogeography, which uses biology and deals with the distribution of plant and animal life; soils geography (see Soil; Soil Management), which is concerned with the distribution of soil; hydrography, which concerns the distribution of seas, lakes, rivers, and streams in relation to their uses; oceanography, which deals with the waves, tides, and currents of oceans and the ocean floor (see Ocean and Oceanography); and cartography, or mapmaking through graphic representation and measurement of the surface of the earth.