The organization OPEC consists of countries in: the middle east. Pollination is an example of: an ecosystem service. A population is: group of individuals of the same species that live in the same area A population of rabbits, introduced to an island, has rapid growth for a few years, and then growth slows. The population becomes stable because: he carrying capacity has been reached. The position of an organism along a food chain is known as its: trophic level. The primary producers in an ocean grazing food web are usual: phytoplankton. The process whereby nitrogen is brought into organic molecules is called: nitrogen fixation. The process whereby oxygen is depleted by the growth of microorganisms due to excess nutrients in aquatic systems is called: eutrophication. A re-created ecosystem in a laboratory environment is known as a: microcosm. A secondary plant compound might be used for which of the following?: a new drug. A solar cooker is an example of: passive solar power. The term environmental -blank- describes the practice of minority neighborhoods being used as hazardous waste sites.: racism. The weight of living organisms in an ecosystem at a particular point in time is called:: biomass