GGR329H5 Lecture Notes - Lecture 1: Temperate Climate, Natural Selection, Fetus
Document Summary
Much experience hunting large species in other continent. Cuba, mf survived until humans showed up. Disappearance of lesser species can result from. Changes in traditional food chain/ habitat related to disappearing mega fauna (prairie reverted ~ forest) Certain mega fauna still around~ north america (el, bears, bisous, etc) Some african mf ~ no fear of humans. Smallpox~ already decimated inca empire led to civil war between. Why agriculture ~ bad for healthy: diet (cheap calories, but poor nutrition) Early farmers: 1 or few starchy crop: greater risk of starvation if crop failure, grow ding: spread of parasites & infections diseases. High death rate (40% children died <15) Allowed more food to be harvested per area. Generally (though not always) provided a greater return in proportion to per- capita time spent working. Key points ~ rise of agriculture usable species of. Relative decline in availability of wild foods. Climate changes after last ice age increased range of domesticable plants.
