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Cellulose is the main substance found in plant cell walls and helps the plant to remain stiff and strong. Humans cannot digest cellulose, but it is important in the diet as a source of fibre.
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solar panels convert the sun's rays into electricity by exiting electrons in silicon cells using the photons of light from the sun. The electricity can then be used to supply renewable energy to your home or buisness.
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Bauxite.
Because bauxite it mainly aluminium oxide however with some impurities
therefore its taken to a bauxite plant where the impurities are removed and the result is white aluminium oxide ( alumina).
Aluminium is then extracted from alumina by electrolysis
The correct option which represents the point in Earth's revolution around the Sun when it is at aphelion is A. in early July.
Aphelion is a term which means 'farthest from the Sun,' which for Earth is around July 4th. Even though it seems weird, because you'd think it's cold when the Earth is so far away from the Sun, because the Earth's axis is tilted, everything is reversed - it is hot when it is farther from the Sun, and cold when it is closer to the Sun.
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An ecological pyramid (also trophic pyramid, Eltonian pyramid, energy pyramid, or sometimes food pyramid) is a graphical representation designed to show the biomass or bioproductivity at each trophic level in a given ecosystem.
A pyramid of energy represents how much energy, initially from the sun, is retained or stored in the form of new biomass at each trophic level in an ecosystem. Typically, about 10% of the energy is transferred from one trophic level to the next, thus preventing a large number of trophic levels. Energy pyramids are necessarily upright in healthy ecosystems, that is, there must always be more energy available at a given level of the pyramid to support the energy and biomass requirement of the next trophic level.
A pyramid of energy shows how much energy is retained in the form of new biomass at 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 trophic level. Pyramids of energy are normally upright, but other pyramids can be inverted or take other shapes.
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 flesh, then omnivores that eat both plants and flesh, and so on). The highest level is the top of the food chain.
