Look at the energy pyramid as shown below. The base is occupied by plants which have 10000 kJ of energy. According to the law of energy flow in an ecosystem, how much energy can the top - level consumers get approximately? (Each level transfers about 10% of its energy to the next ...
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(c) In most ecosystems, all the pyramids of numbers , biomass , and energy are upright. (d) The pyramids of biomass in sea is generally inverted . (e) Pyramid of energy is always inverted and can never be upright. View Solution ...
Energyflowthroughecosystems Energyflowsthroughanecosystem,beingtransferredfromoneorganismtothenext.Energyflowsinonedirection,obeyingthelawofconservationofenergy.Energycannotbecreatedordestroyed,onlychangedfromoneformtoanother.Whenenergyisconvertedfromoneformtoanother,someisalwayslostasheat.Thisinefficiencyoftransferlimits...
The structure of a five-body system is more complicated because it is not possible to form a geometrical structure in three-dimensional space where all vertices are equally separated. As an optimal structure in this case, we take a triangular dipyramid, i.e., a double tetrahedron with common...
Furthermore, a metal or bamboo material is appropriately used as each single wire member. In addition, when the pole of a magnet 5 is contacted with the lower support member 2, the radiation direction of pyramid energy can be bundled to a lower direction. This generation apparatus always ...
In addition, WH-2 and WH-3 exhibit a pyramid shape containing partial planarity and quasi three-dimensionality features, which is also conducive to enhancing the π-π stacking of molecules in the solid state. The above-mentioned structural characteristics make the two HTMs have good hole ...
The 2005 USDA Food Guide Pyramid is associated with more adequate nutrient intakes within energy constraints than the 1992 Pyramid. J Nutr. 2006; 136 :... G Xiang,PE Wilde,AH Lichtenstein,... - 《Journal of Nutrition》 被引量: 185发表: 2006年 The 2005 USDA Food Guide Pyramid Is Associat...
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Because energy flow is inefficient, the lowest level of the food chain is almost always the largest in terms of both energy and biomass. That's why it appears at the base of the pyramid; that's the level that's the largest. As you move up each trophic level or each level of the fo...