Enviornmental Issues
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- how many people live in china?
- 1.31 Billion!!!
- How many people live in the world today?
- 6.56 Billion!
- how many people live in India?
- 1.12 Billion!
-
Understand the
history of important human advances and events... - order of when things such as fire, agriculture, and medicine were discovered.
- when was fire discovered?
- 1 million years ago
- when was agriculture discovered?
- 10,000 years ago
- when did modern medicine start?
- mostly when penicillin was accidentely discovered in the past 100 years
- advances in science and industry were made
- 900 years ago
- what kind of curve are we experienceing in world population?
- a "J" curve
-
1 % or .01 growth in population adds 65 million people!
true or false? - TRUE
- how do you measure the birth rate in DEMOGRAPHIC MEASurMENTS?
-
Birth Rate = (B)=# of Births
Death Rate = (D)=# of Deaths Rate of Increase= (B)/(D) - the higher that reate of increase LOWERS!
- TRUE
- How long until the population of the world today doubles?`
- 50 years
-
Replacement Fertility
Level
(RFL) - Average # of Children a couple must have to replace themselves...
-
Total Fertility Rate
(TFR) - Average number of children born to a women in her lifetime.
- TFR> RFL? or RFL> TFR?
- TFR> RFL!!!
- what is population momentum?
- an increase in population numbers. TFR= RFL
- what is population mementum caused by?
-
1. Large pre reproductive age
2. India 850 millin in 1990 - when is Growth expected to stop? ( if all works?)
- at 2 billion, in 100 years
- Population Growth =
-
birhts + immigrants
-
deaths - emigrants =
zero population growth!!! - 1/3 of the worldly populaion is undr the age of??? ....
- THIRTEEN YEARS OF AGE
- as of 1997, 80% of the worlds populatin iive in
- developing countries
- one person is born every ? how many seconds?
- 9 seconds....