ASB 222 Lecture 15: Exam 3 #3 Origins of Agriculture
10 Nov 2015
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No animals: farming depended on crops and animals domesticated elsewhere (borrowed) Donkey, cat: farming begins with abrupt arrival of foreign people with foreign crops and animals. Size (larger stu are harder to miss, easier to pick) Wild wheat with brittle seed heads hard to harvest. Survived through human digestion system or got thrown away due to whatever reason. Spending less time hunting and more time harvesting: domestication. The process whereby plants and animals change physically and genetically due to human selection (arti cial selection) Domesticated in a similar sequence around the world. Not much mutation needs to occur to be crops. #2 fruits and nut trees (4000 years later) Domesticated animals and plants interact positively with each other. Domesticated plants and animals are not distributed evenly. 50% of calories consumed by world population come from. Distribution of wild cereals species (56 types in total) Lesser co2 was produced so plants can"t survive: farming consequences.
