Subsistence Strategies
Adaptation: the process by which organisms achieve beneficial adjustments to their available environment. Human beings exhibit a very high level of PLASTICITY (adaptability to many environments). They do this not through the process of genetic evolution, but through CULTURE! Culture is a adaptive system. ECOSYSTEM: a system or functioning whole composed of both physical environment and organisms that live in it. each has a CARRYING CAPACITY. This is defined as the number of human beings it can support due to its limiting resource(s) . Although you do not need to memorize the ecosystems in your text, notice that there are adaptation that are impossible or very difficult in some ecosystems. They may also have low carrying capacities for human beings and may entail major alterations of the environment to support them. these can be a great strain on the environment. tundra desert grassland temperate forest mountain zones icelands Two basic k...
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