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Lecture

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Department
Geography
Course
GGR287H5
Professor
Pierre Desrochers
Semester
Fall

Description
Lecture 2 Historical perspective Introduction humans ­curiosities of food* first book written on what humans eat, first  study ­have eaten anything from flies in air to w.e in sea and on land ­but can digest only 20000  of 40000 of plants agriculture ­to increase the plant sp or animals eatan   ­% usable sp plants aand animals/ cultivated area(90 %vs 0.1%)size of seeds and fruits Consumption: Fewer toxins Easier digestions Better nutrition Longer shelf life enhanced freshness 1.­fire(insects) farmers 50 million years (ants) plant can’t be digested ants aphids productions by ants African termites 3
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