MeatLivestock or poultry consumed as food.

Application: The second largest component of the human diet

Mesotrophic Lake

A lake with a moderate level of productivity

Application: A classification of a lake based on its level of primary productivity

MetalAn element with properties that allows it to conduct electricity and heat energy, and perform other important functions

Application: One of the mineral resources around the planet that scientists study in order to locate and manage their extraction or conservation

Metamorphic Rock

Rock that formed when sedimentary rock, igneous rock, or other metamorphic rock is subjected to high temperature and pressure.

Application: A classification of rock

Metapopulation

A group of spatially distinct populations that are connected by occasional movements of individuals between them.

Application: Provide species with protection against extinction.

MicroevolutionEvolution occurring below the species level.

Application: One of the levels in which evolution can occur

MicrolendingThe practice of loaning small amounts of money to help people in less developed countries start small businesses

Application: A financial approach that allows an initial sum of money to be reinvested many times over to the benefit of local economies

MineralA solid chemical substance with a uniform, often crystalline, structure that forms under specific temperatures and pressures

Application: The composition of rocks

Mining SpoilsUnwanted waste material created during mining

Application: The product of strip mining.

Modern Carbon

Carbon in biomass that was recently in the atmosphere

Application: The opposite of fossil carbon

Picture Citations

Meat telegraph.co.uk

Mesotrophic Lake waterquality.ifas.ufl.edu

Metal blueblots.com

Metamorphic Rock library.thinkquest.org

Metapopulation coryi.org

Microevolution cbu.edu

Microlending bakitwhy.com

Mineral imnh.isu.edu

Mining Spoils fs.fed.us

Modern Carbon evergreenecosystems.co.uk