ENV200H1 Lecture Notes - Lecture 19: Terrestrial Animal, Feedlot, Soil Contamination
19 Apr 2018
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Document Summary
Agricultural challenges: loss of prime farmland, loss of domesticated varieties, improving yields. Loss of agricultural land: no prime agricultural land left unclaimed, land loss to urbanization and suburban sprawl. On a clear day, over one-third of canada"s best agricultural land can be seen from the top of. Loss of domestic varieties: farmers using fewer varieties of plants and animals. Currently only 14 plants and 8 terrestrial animal species supply 90% of global intake of calories (if something happens under environmental change we don"t have variety in our diet) Wheat, rice and corn provide more than half of calories people consume: modern methods. Maximum production (choose the seeds that will produce the most in the lower period of time). Comes at the cost of the loss of genetic diversity: loss of genetic diversity. European union limits imports of hormone-treated beef: antibiotics.
