Dating practices mexico

Domesticated animals tend to have developed from species that are social in the wild and that, like plants, could be bred to increase the traits that are advantageous for people.Most domesticated animals are more docile than their wild counterparts, and they often produce more , or milk as well.Faunal remains have also been routinely subjected to morphological, genetic, and biochemical forms of analysis.Although one might presume that plant remains are very rarely preserved in the archaeological record, ancient hearths and middens almost always include small quantities of charred remains of plants.

In fact, quite the opposite appears to be the case.

The first agriculture appears to have developed at the closing of the last Pleistocene glacial period, or (about 11,700 years ago).

At that time temperatures warmed, glaciers melted, sea levels rose, and ecosystems throughout the world reorganized.

cause a variety of localized changes; common effects include an increase in the amount of light reaching ground level and a reduction in the competition among organisms.

As a result, an area may produce more of the plants or animals that people desire for ) families have produced a disproportionately large number of cultigens because they have characteristics that are particularly amenable to domestication.

The changes were more dramatic in temperate regions than in the tropics.

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