Environment Science

a )Nt N0 (ert ) whereNt Population at time t 2006 6 billionN0 Starting tribe size 6 billion humansr born(p) Rate of Natural Increase 1t Time 46 yearsNt foundation of discourse at 2005 humansbThe recent advances in medicine unexclusive health and hygiene have lowered the death regularise of Sweden . similarly , the birth rate is controlled by essence of semipublic aw atomic number 18ness , education and family planningc ) Ecological Footprint is a resource caution tool that measures how much take down and pee area a human community requires to produce the resources it consumes and to douse its wastes under accustomed technology . It is the amount of productive land area infallible to sustain unrivalled persond The ecological invertebrate foot print of the mankind today is approximated to be 5 earths .We exercise this overshoot by liquidating the planet s ecological resourcese ) World population and footprint 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 . growth and ecologya ) One of the just about misunderstood terms is the diction survival of the fittest . Literally translated , it bureau survival of the survivors , a hollow statement in the biological sense . Survival of the fittest in the biological sense means that only those fit seemly to be able to purge drop ensure the persistence of their species . Those unfit , those who die earlier they can pass on their genetic data pull up stakes in conclusion cease to exist . A very sizable suit of this is in the peacock s tail feathers These tail feathers are brightly colored , hereby decreasing their chances of surviv al .

heretofore , the of import purpose of these feathers is to attract prospective mates , increase their chances to disgorge and ensuring the continuity of their lineb ) Trophic take aim is the position an be holds in the nutriment chain or web . In a simplified ecosystem composed of food pubic hairs , rabbits , and lynxes , we can recall three trophic directs . First is the foundation species , the hood maker or autotroph which produces energy thru conversion of environment factors , in this case the food shrub . Feeding upon the food shrub are the rabbits , belonging to the second trophic level . The rabbits are heterotrophs considered to be t he primary consumers since they obtain energy or consume upon the primary producer The lynxes belong to the third trophic level . They are also heterotrophs that are secondary consumers , nutrition upon the primary consumers , which in this case are the rabbitsd )The lynxes and rabbits belong to a marauder prey relationship Predators and prey can influence one another s evolution . The resulting pattern follows the Lotka-Volterra imitate real one by one by Alfred Lotka and Vito Volterra in the 1920 s . This model shows that both predator and...If you need to get a across-the-board essay, order it on our website: BestEssayCheap.com

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