Environmental Science

Question 1 . In the 1990 US Census , the existence was rough 260 ,000 ,000 . In the 2000 US Census , the world was more or less 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 universe 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 corporate Pest worry ? What is a main crap and address of this management strategy ? An alternate system of infestationerer reign is the hold of biologic agents . What is the greatest risk in the usage of these worksIn tegrated Pest counseling (IPM ) is the coordinated use of chap and environmental information along with available plague comprise rules including heathenish , biological , genetic and chemical methods to prevent unacceptable levels of infestation damage by the most economical means , and with the least(prenominal) possible hazard to people , property and the environment This make head air relies primarily on non-chemical means ( much(prenominal) as conquerling mood , food sources , and building entry points ) to prevent and manage gadfly infestation . Chemical treatments are used only in a crisis situation threatening rapid losses or when pests fail to succumb to more conservative methodsAny control maneuver chosen must be used at the fix time and place to be effective .

Keeping lede of pest populations before they get out of hand is as tumesce as important to avoid emergency situations , which may guide the use of pesticideThe main goal of Integrated Pest Management dodging is to control pests in safer , more effective , longer-lasting shipway 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 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 ethnical techniques or at least scheme of harming themb ) augmentation of naturally-occurring species by buy and relea sing more of the samec classical biological control in which new biological control species peculiar(prenominal) to pests are desire and introducedReferencesCalvin , D .D , et al . 2001 . Field Crops Integrated Pest Management Training andReference Manual . The Pennsylvania tell apart University . 122 pp . plus attachments ...If you penury to get a full essay, ball club it on our website: OrderCustomPaper.com

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