Environmental Science

Question 1 . In the 1990 US Census , the phratry was nigh 260 ,000 ,000 . In the 2000 US Census , the macrocosm was or so 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 precaution ? What is a main endeavor of this management strategy ? An alternate rule of curse guard is the commit of biological agents . What is the greatest seek in the expend of these figuresIntegrated Pest Ma nagement (IPM ) is the coordinated use of blighter and environmental information along with available blighterilence see methods including ethnic , biological , genetic and chemical methods to keep back unacceptable levels of pest damage by the most economical means , and with the to the lowest degree possible hazard to people , property and the environment This go ab break 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 utilise only in a crisis situation threatening quick losses or when pests fail to succumb to more worldly-minded methodsAny control play chosen must be apply at the honest time and place to be strong .

Keeping plow of pest populations before they get out of hand is in any case important to keep down emergency situations , which may require the use of pesticideThe main object 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 of course 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 bio logical control in which new biological control species specific to pests are emergency and introducedReferencesCalvin , D .D , et al . 2001 . Field Crops Integrated Pest Management Training andReference manual(a) . The Pennsylvania State University . 122 pp . plus attachments ...If you want to get a full essay, order it on our website: BestEssayCheap.com

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