Environmental Science

Question 1 . In the 1990 US Census , the universe of discourse was rough 260 ,000 ,000 . In the 2000 US Census , the world was most 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 cosmos 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 unified Pest worry ? What is a main bring out and address of this management strategy ? An alternate system of infestationerer pretermit is the hold of biologic agents . What is the greatest risk in the exemplar of t hese worksIntegrated Pest anxiety (IPM ) is the coordinated use of chap and environmental information along with available fellais simplicity effects including goy , biologic , genetic and chemical methods to prevent unacceptable levels of curse word damage by the most economical means , and with the to the lowest degree possible hazard to people , property and the environment This mount up relies primarily on non-chemical means ( much(prenominal) as delayling mood , food sources , and building entry points ) to prevent and manage pest infestation . Chemical treatments are used only in a crisis situation threatening rapid losses or when pests fail to succumb to more conservative methodsAny control simulated military operation chosen must be used at the adjust time and place to be effective .

Keeping lede of pest populations before they get out of hand is as hearty as important to avoid emergency situations , which may involve the use of pesticideThe main goal of Integrated Pest Management dodging is to control pests in safer , more effective , longer-lasting ship canal The white plague 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 charge 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 ethnical techniques or at least avoidance of harming themb ) augmentation of naturally-occurring sp ecies by buy and releasing more of the samec classical biological control in which new biological control species specialised to pests are desire and introducedReferencesCalvin , D .D , et al . 2001 . Field Crops Integrated Pest Management Training andReference Manual . The Pennsylvania recount University . 122 pp . plus attachments ...If you penury to get a full essay, order it on our website: OrderCustomPaper.com

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