9 16 kya thousand years ago The lase Ice Age glacial maximum was 20 000 years ago Younger Dryas 12 8 11 5 kya there was an abrupt change in temperature Went from slowly getting warmer and wetter to dryer and colder very suddenly Carbonized wheat kernels were discovered in Natufian sites They do not come from domesticated plants All animals were also wild not domesticated This showed that Natufians were sedentary foragers Farming creation and maintenance of an artificial ecosystem by humans Domestication modification either intentionally or unintentionally of the genetic make up of a population of plants animals Farmers killed aggressive livestock and bred only the non aggressive animals Horticulture small scale cultivation of crops by small communities simple hard tools no irrigation or plows Agriculture intensive farming using plows and irrigation for large plots of land Pastoralists rely on herds of domesticated animals
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