10 - • has implications for current and future social and...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Env Science 2 22:02 Super exponential growth- when population grows at increasing growth at rate of  increase The human population grew at a rate unprecedented in history in the 20 th  century Population growth is the underlying environmental problem 60% of the population live within 60 miles of the ocean soil fertility/arability, climate, cities what about the urban vs. rural split? About a 50/50 split but there are a little more  people living in urban areas Population age structure: the proportion of the population in each age class affects current and future birth rates, death rates and growth rates has an impact on the environment
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
Background image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: • has implications for current and future social and economic status Population pyramids • diagrams of population structure • show age—sex distribution • distribution of cohorts often form the shape of pyramids • shows a wealth of info. About current conditions and long term trends Some measures of population Crude birth rate and crude death rate: • per 1000 population • relates births to total population without regard to age or sex composition Fertility rate • total number of births per woman of childbearing age • replacement rate: 2.1-2.3 22:02 22:02...
View Full Document

This note was uploaded on 08/26/2011 for the course ECON 1 taught by Professor Bergstrom during the Spring '07 term at UCSB.

Page1 / 3

10 - • has implications for current and future social and...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online