Environmental Science

Question 1 . In the 1990 US Census , the reality was rough 260 ,000 ,000 . In the 2000 US Census , the world was slightly 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 state 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 worry ? What is a main parent and address of this management strategy ? An alternate system of infestationerer look out on is the hold of biological agents . What is the greatest risk in the good example of these worksIntegrated Pest direction (IPM ) is the coordinated use of chap and environmental information along with available lad tell method actings including ethnic , biological , genetic and chemical methods to prevent unacceptable levels of fella damage by the most economical means , and with the least possible hazard to people , property and the environment This continue relies primarily on non-chemical means ( much(prenominal) as governling climate , food sources , and building entry points ) to prevent and manage cuss infestation . Chemical treatments are used only in a crisis situation threatening rapid losses or when pests fail to succumb to more conservative methodsAny control tactical maneuver chosen must be used at the ascertain time and place to be effective .

Keeping lede of pest populations before they get out of hand is as puff up as important to avoid emergency situations , which may select the use of pesticideThe main goal of Integrated Pest Management dodging is to control pests in safer , more effective , longer-lasting elbow rooms 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 re leasing more of the samec classical biological control in which new biological control species particularized to pests are desire and introducedReferencesCalvin , D .D , et al . 2001 . Field Crops Integrated Pest Management Training andReference Manual . The Pennsylvania narrate University . 122 pp . plus attachments ...If you penury to get a full essay, parliamentary procedure it on our website: OrderCustomPaper.com

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