BIOLOGY 171 Lecture Notes - Lecture 21: Mycorrhiza, Nitrogen Fixation, Biogeochemical Cycle
Document Summary
The process by which organisms take up nutrients from the environment. The cycling of carbon and other biologically important elements through the biosphere. The process by which living organisms produce larger molecules from smaller ones. Where a lot of organisms die from too much iron, uses up a lot of oxygen. An organism that breaks down dead tissues, feeding on the dead cells or bodies of other organisms. A chemical reaction that breaks down compounds into simpler products. Benefits to humans provided by biodiversity, such as cleaner air and water, greater primary productivity, improved resilience to environmental disruption, and untapped sources of food and molecular compounds for use in medicine and agriculture. Raw material that must be ingested because cells cannot make it from other molecules. The process in which added nutrients lead to a great increase in the population of algae and cyanobacteria. The rate at which carbon flows from one reservoir to another.
