Textbook Notes (368,460)
Canada (161,892)
HLTB21H3 (177)
Chapter 2

Chapter 2.docx

2 Pages
Unlock Document

Health Studies
Rhan- Ju Song

September 13 , 2012 Chapter 2: Plagues, the Price of being Sedentary  With meat eating, came an increase in paratism  As nomadic hunters encountered new prey, they met new parasites and new vectors of parasites  Zoonotic: animal infections transmitted to humans  H. habilis were replaced by Homo erectus ( erect man)  When the population of H. Erectus left Africa, some of their parasites when with them, but only those that could be transmitted from person to person  As H. erectus encountered new environments, with new kinds of animals, they were subjected to new sources of parasites  Living overtime in the same settlements caused human disease The Road to Plagues: More Humans, More Disease  Human population was increasing that led to overcrowding which led to more diseases  Malthusian model: natural population has an optimal density  Population was near base-line for many years until it hit industrial revolution  Agriculture changed the environmental restraint so that the set point or upper limit of population size was increased The Effect of Agriculture  Change from hunting and gathering to farming was called the agricultural revolution  What limited population was the mother who could only have one baby at one time  Agriculture encouraged higher birth rates, because additional children provided cheap labour  The availability of surplus stored food allowed members of the population to specialize some became guards & others were soldiers  Heredity came in use, they taxed food which led to urbanization  Disease was very popular at this time because it spread very fast and because everyone was crowded o Closer ass
More Less

Related notes for HLTB21H3

Log In


Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.