Thesis Statement: Overpopulation is bad for us.

Mortality Rate

Mortality rate is a measure of the number of deaths per unit of time.

Time spent for looking in the internet: 3 mins.

Wikipedia,the free encyclopedia. Mortality Rate. Nov 12 2008.
http://en.wikipedia.org/wiki/Mortality_rate

Mortality rate is the probability of death in the first year of life.

Time spent in the library: 6 mins.

Lauren Bahr and Bernard Johnston. [Population]Library. Collier’s Encyclopedia. Nov 12 2008.