Plate tectonics and seafloor spreading, turbidity currents, sediments, pH levels, atmospheric elements, metamorphic activity, and ecology all influence ocean chemistry, also known as marine chemistry. Chemical oceanography is the study of the chemistry of marine habitats, including the effects of various variables. Marine ecosystems are sensitive to changes in ocean chemistry, and marine life has evolved to the chemistries specific to the earth's seas. Human activity has had a growing impact on the chemistry of the earth's oceans, with pollution from industry and diverse land-use patterns having a considerable impact on the oceans.
Geochemistry is a field of Earth Science that uses chemical principles to learn more about the Earth system and other planets' systems. Geochemists see the Earth as a collection of separate spheres — rocks, fluids, gases, and biological — that exchange matter and energy throughout time. The study of the processes that influence the amount, composition, and distribution of chemical compounds and isotopes in geologic environments is also known as geochemistry. In terms of the themes it covers and the methodologies it employs, geochemistry is a vast and intriguing discipline.