Chapter 1, 2, and 3 Definitions

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Chapter 1, 2, and 3 Definitions by Mind Map: Chapter 1, 2, and 3 Definitions

1. The Biosphere includes all living organisms on earth, together with the dead organic matter produced by them.

1.1. The Lithosphere the rigid outer part of the earth, consisting of the crust and upper mantle.

1.2. A Hydrosphere is the total amount of water on a planet. The hydrosphere includes water that is on the surface of the planet, underground, and in the air

1.3. Atmosphere is the envelope of gases surrounding the earth or another planet.

2. Biodiversity is the number of species found in an ecosystem.

2.1. Food chain is a hierarchical series of organisms each dependent on the next as a source of food.

2.1.1. An autotrophic organism that serves as a source of food for other organisms in a food chain. Producers include green plants, which produce food through photosynthesis, and certain bacteria that are capable of converting inorganic substances into food through chemosynthesis.

2.1.2. Consumers are organisms of an ecological food chain that receive energy by consuming other organisms. These organisms are formally referred to as heterotrophs, which include animals, bacteria and fungus.

2.1.3. Decomposers are organisms that break down dead or decaying organisms.

3. Equilibrium is the condition in which all acting influences are balanced or canceled by equal opposing forces, resulting in a stable system

3.1. Endangered Species is a species of animal or plant that is seriously at risk of extinction.

3.2. Local extinction, or extirpation, is the condition of a species that ceases to exist in the chosen geographic area of study, though it still exists elsewhere.

3.3. Threatened species are any species which are vulnerable to endangerment in the near future

3.4. Special Concern refers to any species that is at risk because of low numbers at the fringe of its range or in some restricted area.

4. Tropic Level is each of several hierarchical levels in an ecosystem, comprising organisms that share the same function in the food chain and the same nutritional relationship to the primary sources of energy.

4.1. A Autotroph is an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide.

4.2. A Heterotroph an organism deriving its nutritional requirements from complex organic substances.

5. Chemosynthesis is the synthesis of organic compounds by bacteria or other living organisms using energy derived from reactions involving inorganic chemicals, typically in the absence of sunlight.

5.1. Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.

5.1.1. Cellular respiration is the set of metabolic reactions and processes that take place in the cells of organisms to convert biochemical energy from nutrients into ATP and then release waste products.