Minerals make up rocks. ... Igneous rock , formed by the cooling of magma (molten rock) inside the Earth or on the surface. Sedimentary rocks, formed from the products of weathering by cementation or precipitation on the Earth's surface. Metamorphic rocks, formed by temperature and pressure changes inside the Earth.
Con la creciente necesidad de antibióticos, hormonas de crecimiento, pesticidas y otros productos artificiales, los agricultores dependen cada vez más de estos proveedores.