How might the evolutionary changes of certain diseases help us to understand population growth?
What will be an ideal response?
A. Evolutionary changes of disease
1. global profile of disease changed on its own without humans doing
anything to affect it
2. consequence of ecological exchange
3. fewer populations suffered from lack of natural immunization
4. global communications meant that more and more people could
contract the same diseases
3. migrations of disease-bearing organisms remained dangerous
a. yellow fever
b. cholera
c. tropical forms of malaria
4. in terms of global population losses were balanced by the end of the
plague
a. plague never returned to Europe
b. changes in the distribution of carrier species
c. demise of plague was probably, like most forms of species
extinction, a product of evolution
d. microorganisms that bear disease are more mutable
e. improving health is due to the changing habits and nature of
microbes
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