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  2. Ecological pyramid - Wikipedia

    en.wikipedia.org/wiki/Ecological_pyramid

    A pyramid of energy shows how much energy is retained in the form of new biomass from each trophic level, while a pyramid of biomass shows how much biomass (the amount of living or organic matter present in an organism) is present in the organisms. There is also a pyramid of numbers representing the number of individual organisms at each ...

  3. File:MyPyramid for kids - lessons for grades 5 and 6 - level ...

    en.wikipedia.org/wiki/File:MyPyramid_for_kids...

    MyPyramid for kids : lessons for grades 5 and 6 : level 3 Description Subjects: Children Nutrition Study and teaching (Elementary) United States; Nutrition Study and teaching (Primary) United States

  4. 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 ]

  5. Pyramid power - Wikipedia

    en.wikipedia.org/wiki/Pyramid_power

    Pyramid power is the belief that the pyramids of ancient Egypt and objects of similar shape can confer a variety of benefits. Among these supposed properties are the ability to preserve foods, [1] sharpen or maintain the sharpness of razor blades, [2] improve health, [3] function "as a thought-form incubator", [4] trigger sexual urges, [5] and cause other effects.

  6. Exercise book - Wikipedia

    en.wikipedia.org/wiki/Exercise_book

    These notebooks are intended for usage in middle and high school for tasks like lesson notes, long-term projects, essays, laboratory experiments, etc. Other sizes and number of sheets are permitted. The preferable sizes are (in mm): 210 x 297 (A4), 203 x 288, 203 x 275, 170 x 203, 148 x 210 (A5), 144 x 203.

  7. Food pyramid (nutrition) - Wikipedia

    en.wikipedia.org/wiki/Food_pyramid_(nutrition)

    A food pyramid is a representation of the optimal number of servings to be eaten each day from each of the basic food groups. [2] The first pyramid was published in Sweden in 1974. [3] [4] [5] The 1992 pyramid introduced by the United States Department of Agriculture (USDA) was called the

  8. 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 ...

  9. Patterns in nature - Wikipedia

    en.wikipedia.org/wiki/Patterns_in_nature

    Waves are disturbances that carry energy as they move. Mechanical waves propagate through a medium – air or water, making it oscillate as they pass by. [ 68 ] Wind waves are sea surface waves that create the characteristic chaotic pattern of any large body of water, though their statistical behaviour can be predicted with wind wave models. [ 69 ]

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