Human Ecology

Can you explain why food drawstrings r arly have more than four trophic aims ? Your explanation should mortify why at that place so a couple of(prenominal) crown carnivores such(prenominal) as eagles , hawks , tigers , and black-and-blue sharks . How does ecological efficiency relate to the rear discussion grain-fed beef What figures (from either the powerpoints or text ) sponsor you answer this question ? Hint : The figures illustrate slide attachment watercourse (and muscularity loss through an ecosystemNormally thither argon excerpt up to four trophic aims because vigour is limiting at the 4th trophic take aim of food chain . This is the close why there are only few carnivores (Eagles , hawks , white sharks ) that survive in the 4th tropic a try out because they are having difficulty verifying the pus hing requirement from the limiting energy (food limits . With to each integrity rise in the train of food chain , there is a signifi domiciliatet difference in the number of members of that trophic level . For example from the first level to the second level , there are vast verse of plants compared to the 2nd trophic level such as the insects that chow them . This industrial drop-off in the number for every rise in the trophic level is related to the amount of energy available in each level . The reason for this is really govern by the 2nd law of thermodynamics which basically states that in converting from one energy form to another there are always round losses . So one can never choke the same amount of energy as much as what was put . Animals could not obtain as much as 100 of the energy it eats . jibe to the Answers .com (2007 , it is more similar just 10 of the food that an puppet can drink . So because of this inefficiency in converting from the energy of one tr ophic level to another , there is a progress! ive decrease of energy level as we move from reduce trophic level to higher levels . So eventually at the fourth level it reaches a maximum limit to sustain their energy needsWhat are precious coral let downs ? How are they form ?

Of what value are they ? why are they vulnerable to injury ? What are the harmful impacts of gentle activities on coral reefsAccording to the Wikipedia (2007 , coral reefs , which are also know as sea gardens , are structures consisting of HYPERLINK http /en .wikipedia .org /wiki / chromatic \o Coral coral skeletons built upon coral skeletons . They contract in tropical seas in the HYPERLINK http /en .wikipedia .org /wiki /Photic_zone \o Photic zone ph otic zone , where there is easygoing HYPERLINK http /en .wikipedia .org /wiki /Ocean_ mount_ reel \o Ocean surface wave wave action , not so brawny it bust the reef apart yet strong comely to trouble the water and deliver sufficient food and group O . They are formed from reef building corals and other beingness that deposits calcium carbonate . Through symbiosis with unicellular alga called zooxanthellae , reef building corals houses polyps that become the source of formation of reef communities . These algal cells within the tissues of the coral polyps carry out photosynthesis and produce...If you indispensableness to pick out a full essay, order it on our website: OrderEssay.net

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