Environmental Science

Question 1 . In the 1990 US Census , the institution was rough 260 ,000 ,000 . In the 2000 US Census , the world 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 world 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 incorporated Pest worry ? What is a main allude 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 causa of these worksI ntegrated Pest trend (IPM ) is the coordinated use of chap and environmental information along with available plague experience modes including heathenish , biological , genetic and chemical methods to prevent unacceptable levels of swearing damage by the most economical means , and with the least(prenominal) possible hazard to people , property and the environment This draw close relies primarily on non-chemical means ( much(prenominal) as seeling clime , food sources , and building entry points ) to prevent and manage oath infestation . Chemical treatments are used only in a crisis situation threatening rapid losses or when pests fail to succumb to more conservative methodsAny control evasive action chosen must be used at the complicate time and place to be effective .

Keeping lede of pest populations before they get out of hand is as tumefy as important to avoid emergency situations , which may contend the use of pesticideThe main goal of Integrated Pest Management dodging is to control pests in safer , more effective , longer-lasting slipway 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 dodging of harming themb ) augmentation of naturally-occurring species by buy and r eleasing more of the samec classical biological control in which new biological control species particular to pests are desire and introducedReferencesCalvin , D .D , et al . 2001 . Field Crops Integrated Pest Management Training andReference Manual . The Pennsylvania arouse University . 122 pp . plus attachments ...If you penury to get a full essay, articulate it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper