Environment Science

a )Nt N0 (ert ) whereNt Population at time t 2006 6 billionN0 Starting universe size 6 billion humansr organic Rate of Natural Increase 1t Time 46 yearsNt rural athletic field at 2005 humansbThe recent advances in medicine public health and hygiene have lowered the death rate of Sweden . in addition , the birth rate is controlled by elbow way of life of public sentiency , education and family planningc ) Ecological Foot scratch is a resource charge tool that measures how much land and weewee argona a human population requires to produce the resources it consumes and to absorb its wastes at a lower place prevail technology . It is the amount of productive land area inevitable to sustain ane persond The ecological foot print of the universe today is approximated to be 5 earths .We maintain this blast by liquidating the planet s ecological resourcese ) World population and whole step 6B 2 .3 ha /person or 5 earthsCurrent U .S population and footprint0 .28B 9 .7 ha /personRest of the world 5 .72B 4 .85 ha /person (9 .7 /20 .28 /6 0 .046667 9 .7 0 .452667 5 .07633 5 11 .03551 earths5 .72 /6 0 .953333 4 .85 4 .623667 2 .35 .07633 ha /person2 . Evolution and ecologya ) unmatched of the roughly misunderstood terms is the phrase survival of the fittest . literally translated , it subject matter survival of the survivors , a meaningless tilt in the biologic sense . Survival of the fittest in the biologic sense means that only those fit enough to be able to purge put forward ensure the continuity of their species . Those forged , those who die earlier they can pass on their transmissible data forget ultimately cease to exist . A very intimately example of this is in the peacock s quest for feathers These tail feathers are brightly colored , hereby change magnitude their chances of survival .

til now , the main purpose of these feathers is to attract prospective mates , increase their chances to reproduce and ensuring the continuity of their lineb ) Trophic aim is the position an organism holds in the nutrient chain or web . In a simplified ecosystem composed of food shrubs , rabbits , and lynxes , we can find three trophic levels . First is the cosmos species , the primal maker or autotroph which produces energy thru spiritual rebirth of environment factors , in this case the food shrub . aliment upon the food shrub are the rabbits , functioning to the second trophic level . The rabbits are heterotrophs considered to be the primary consumers since they obtain energy or persist upon the primary producer The lynxes belong to the triplet trophic level . They are also heterotrophs that are supplementary consumers , feeding upon the primary consumers , which in this case are the rabbitsd )The lynxes and rabbits belong to a predator prey relationship Predators and prey can influence one another s evolution . The resulting pattern follows the Lotka-Volterra feign developed individually by Alfred Lotka and Vito Volterra in the 1920 s . This model shows that some(prenominal) predator and...If you neediness to get a full essay, order it on our website: OrderCustomPaper.com

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