Environmental Science

Question 1 . In the 1990 US Census , the race was nigh 260 ,000 ,000 . In the 2000 US Census , the macrocosm was ab egress 285 ,000 ,000 . During the same period , the fertility rate was approximately 2 .1 children . At this fertility rate , what would you expect the rate of race growth to be ? What could account for the 25 ,000 ,000 increase in the populationRate of Population Growth :285 ,000 ,000 - 260 ,000 ,000 0 .77260 ,000 ,000The 25 ,000 ,000 increase in the population may be the result of any or all of the following : internal birth rate , migration and immigrationQuestion 2 ) What is Integrated Pest precaution ? What is a main endeavor of this management strategy ? An alternate rule of curse flow is the commit of biologic agents . What is the greatest take a chance in the lend oneself of these figuresIntegr ated Pest Management (IPM ) is the coordinated use of blighter and environsal information along with available expletiveilence retain methods including pagan , biological , genetic and chemical methods to bar unacceptable levels of pest damage by the most economical means , and with the to the low degree possible hazard to people , property and the environment This go about relies primarily on non-chemical means (such(prenominal) as controlling humor , food sources , and building entry points ) to prevent and manage pest infestation . Chemical treatments are utilize only in a crisis situation threatening rapid losses or when pests fail to succumb to more than standpat(prenominal) methodsAny control play chosen must be utilize at the honest time and place to be stiff .

Keeping plow of pest populations before they get out of hand is in any case important to vacate emergency situations , which may require the use of pesticideThe main design of Integrated Pest Management dodge is to control pests in safer , more effective , longer-lasting ways The apply of Biological control Agents is an alternative method of pest control . The greatest risk of the use of biological control agents is that the method use predators , parasites and diseases of pests in a targeted way to suppress pest populations . Use of predators and parasites as biological control for pests are handled in one or more of 3 ways , such asconservation and encouragement of naturally occurring biological control organisms by cultural techniques or at least avoidance of harming themb ) augmentation of naturally-occurring species by purchasing and releasing more of the samec classical biological control in which new biological c ontrol species specific to pests are emergency and introducedReferencesCalvin , D .D , et al . 2001 . Field Crops Integrated Pest Management Training andReference manual of arms . The Pennsylvania State University . 122 pp . plus attachments ...If you want to get a full essay, order it on our website: OrderEssay.net

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