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2. Ecological pyramid - Wikipedia

   en.wikipedia.org/wiki/Ecological_pyramid

   Pyramids of energy are normally upright, but other pyramids can be inverted (pyramid of biomass for marine region) or take other shapes (spindle shaped pyramid). Ecological pyramids begin with producers on the bottom (such as plants) and proceed through the various trophic levels (such as herbivores that eat plants, then carnivores that eat ...

3. Energy flow (ecology) - Wikipedia

   en.wikipedia.org/wiki/Energy_flow_(ecology)

   A food pyramid and a corresponding food web, demonstrating some of the simpler patterns in a food web. A graphic representation of energy transfer between trophic layers in an ecosystem. Energy flow is the flow of energy through living things within an ecosystem. [1]

4. Trophic level - Wikipedia

   en.wikipedia.org/wiki/Trophic_level

   This is called an energy pyramid. The energy transferred between levels can also be thought of as approximating to a transfer in biomass, so energy pyramids can also be viewed as biomass pyramids, picturing the amount of biomass that results at higher levels from biomass consumed at lower levels. However, when primary producers grow rapidly and ...

5. Energy hierarchy - Wikipedia

   en.wikipedia.org/wiki/Energy_hierarchy

   Energy efficiency was a lower priority when energy was cheap and awareness of its environmental impact was low. In 1975 the average fuel economy of a car in the US was under 15 miles per gallon [ 6 ] Incandescent light bulbs, which were the most common type until the late 20th century, waste 90% of their energy as heat, with only 10% converted ...

6. File:Ecological pyramid.svg - Wikipedia

   en.wikipedia.org/wiki/File:Ecological_pyramid.svg

   You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.

7. Soil food web - Wikipedia

   en.wikipedia.org/wiki/Soil_food_web

   An example of a topological food web (image courtesy of USDA) [1]. The soil food web is the community of organisms living all or part of their lives in the soil. It describes a complex living system in the soil and how it interacts with the environment, plants, and animals.

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   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

9. Primary nutritional groups - Wikipedia

   en.wikipedia.org/wiki/Primary_nutritional_groups

   The sources of energy can be light or chemical compounds; the sources of carbon can be of organic or inorganic origin. [ 1 ] The terms aerobic respiration , anaerobic respiration and fermentation ( substrate-level phosphorylation ) do not refer to primary nutritional groups, but simply reflect the different use of possible electron acceptors in ...