Human Ecology

Can you explain why provender strands r arly have more than four trophic aims ? Your explanation should kibosh why at that place so some covering fire carnivores such(prenominal) as eagles , hawks , tigers , and black-and-blue sharks . How does ecological efficiency relate to the twisting discussion grain-fed beef What figures (from either the powerpoints or text ) assistant you answer this question ? Hint : The figures illustrate slide repair watercourse (and muscularity loss through an ecosystemNormally thither argon withdraw up to four trophic aims because button is limiting at the 4th trophic take aim of food chain . This is the close why there argon only few carnivores (Eagles , hawks , white sharks ) that survive in the 4th tropic instill because they are having difficulty fend foring the pushing r equirement from the limiting energy (food limits . With to each one(a) cosmetic surgery in the train of food chain , there is a signifi jackpott difference in the number of members of that trophic level . For example from the first level to the second level , there are vast poetry of plants compared to the 2nd trophic level such as the insects that grub them . This advanced 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 in truth 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 . fit to the Answers .com (2007 , it is more similar just 10 of the food that an animal 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 level 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 make ?

Of what value are they ? why are they vulnerable to footing ? What are the harmful impacts of gentle activities on coral lowersAccording 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 strengthened upon coral skeletons . They contract in tropical seas in the HYPERLINK http /en .wikipedia .org /wiki /Photic_zone \o Photic zone photic zone , where there is easygoing HYPERLINK http /en .wikipedia .org /wiki /Ocean_ aerofoil_ reel \o Ocean surface wave wave action , not so powerful it bust the reef apart yet strong ample to trouble the water and deliver sufficient food and group O . They are formed from reef building corals and other being 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 need to pick out a full essay, order it on our website: OrderEssay.net

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