chapter notes

3 Pages
Unlock Document

Environmental Science
Carl Mitchell

Chapter 8 N Every 5 seconds, somewhere in the world, a child starves to death Food security: the guarantee of an adequate, reliable, and available food supply to people at all times N Increased food production o devoting more energy (fossil fuels) to agriculture o planting and harvesting more frequently o increased use of irrigation, fertilizers, pesticides o increasing the amount of cultivated land o developing (through crossbreeding and genetic engineering) more productive croplivestock varieties undernourishment: people who receive less than 90% of their daily caloric needs (mainly in developing) N economic, 15 of worlds people live on > $1 a day, more than half live on > $2 a day overnutrition: receiving too many calories each day (mainly in developed) Five As: Availability, Affordability, Accessibility, Acceptability, Adequacy Malnutrition: shortage of nutrients the body needs (vitamins and minerals) can lead to disease Green Revolution: methods and technologies to increase crop output per unit area of cultivated land N extensification (more land) to intesnsification (more productivity from unit of land) N Norman Borlaug specially bred type of wheat Industrialized agriculture: applying synthetic fertilizers, chemical pesticides, irrigation, using heavy equipment N Beneficial for biodiversity and natural ecosystems negative impacts on environment o Monocultures made planting and harvesting efficient o reduced biodiversity; susceptible to viral diseases, fungal pathogens or insect pests o narrowing human diet
More Less

Related notes for EESA01H3

Log In


Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.