ENVS CHAP 14 Flashcards
What is a demographic transition?
It is the switch form high birth and death rates to low birth and death rates.
ex. after baby boomers
Why has a demographic transition from high to low occurred?
B/c medical advances reduce death rates while personal choices reduce birth rate (voluntary). Important with the assumption of a global carrying capacity
What are emerging infectious diseases?
They are diseases appearing in the human population for the first time or expanding rapidly in incidence or geographic range (must faster than environmental change).
ex. HIV, ebola, SARS, lyme disease
What are most emerging infectious diseases classified as?
Most are zoonoses, meaning they are infections that circulate naturally in non-human vertebrate hosts, but they can be transmitted to humans
