natural mineral material
81Ecosystem services — Pollination by a bumblebee, a type of ecosystem service Humankind benefits from a multitude of resources and processes that are supplied by natural ecosystems. Collectively, these benefits are known as ecosystem services and include products like …
82protozoan — /proh teuh zoh euhn/, n., pl. protozoans, (esp. collectively) protozoa / zoh euh/, adj. Biol. n. 1. any of a diverse group of eukaryotes, of the kingdom Protista, that are primarily unicellular, existing singly or aggregating into colonies, are… …
83Suelos de Chile — No es fácil dar una definición para el concepto de suelo, debido a que existen distintos puntos de vista para su análisis. Pese a ello, algunos elementos son comunes en la mayoría de las definiciones. Entre ellos podemos considerar que el suelo:… …
84Ceramic — A Ming Dynasty porcelain vase dating 1403 1424 …
85Hydroxyapatite — A major component and an essential ingredient of normal bone and teeth. Hydroxyapatite makes up bone mineral and the matrix of teeth. It is hydroxyapatite that gives bones and teeth their rigidity. * * * A natural mineral structure that the… …
86Pedology (soil study) — Pedology (from Greek: πέδον, pedon , soil ; and λόγος, logos , study ) is the study of soils in their natural environment. [cite web |url = http://natres.psu.ac.th/Link/SoilCongress/bdd/symp45/75 t.pdf | title = Soil Preservation and the Future… …
87Physical — Phys ic*al, a. 1. Of or pertaining to nature (as including all created existences); in accordance with the laws of nature; also, of or relating to natural or material things, or to the bodily structure, as opposed to things mental, moral,… …
88Physical astronomy — Physical Phys ic*al, a. 1. Of or pertaining to nature (as including all created existences); in accordance with the laws of nature; also, of or relating to natural or material things, or to the bodily structure, as opposed to things mental, moral …
89Physical education — Physical Phys ic*al, a. 1. Of or pertaining to nature (as including all created existences); in accordance with the laws of nature; also, of or relating to natural or material things, or to the bodily structure, as opposed to things mental, moral …
90Physical examination — Physical Phys ic*al, a. 1. Of or pertaining to nature (as including all created existences); in accordance with the laws of nature; also, of or relating to natural or material things, or to the bodily structure, as opposed to things mental, moral …
