Human Population and the Environment
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What is the meaning of the term biological plasticity?
the ability to adapt biologically to an environment
What is an adaptation?
any variation that can increase one’s biological fitness in a specific environment
list the three ways in which humans respond to environmental stresses
• Acclimatization • Developmental acclimatization/adjustment • Genetic change
What is Acclimatization?
Adaptation that can take moments to weeks to occur and is reversable
Short term acclimatization is..
adaptation that can occur within seconds of exposure to a stressor.
Developmental acclimatization/ Adjustment occurs…
During an individual’s growth and development. This is permanent.
Genetic adaptation occurs…
when a stressor is constant and can last for many generations. These are environmentally specific.
What factors affect population distribution and density?
~Climate ~relief ~Natural vegetation ~Soil ~Bodies of water