new unit

Today we started a new unit. It is called population and settlement.
There are billion people on the planet it is increases by 73 million a year.
Most of the growth takes place in developing countries.
Life expectancy the average number of years to be lived by a group of people born in the same year .
Cure birth rate- number of births per 1000 of the population.
Crude death rate- number of deaths per 1000 of the population.
Rate of natural  increase- produced by subtracting the death rate from the birth rate. This gives us the annual natural growth rate in percentage form
Net migration - the difference between the number of persons entering and leaving the country.
An excess of persons entering the country in net immigration written as a positive number
Excess of persons leaving the country net immigration


Information I found on the US.
we are 42 in the world  in life expectancy
We have 79.96 black people  12.85 Asian 4.43 Alaskan
82.1 speak English 10.7 speak Spanish
There are 318,892,103 people in the US
Our growth rate is 0.77
Birth rate 13.42
Death rate 8.15 and we are 94 in the world for death rate
2.45 immigrants per 1000 people
We are ranked 18 in the world for obesity
Then we are 9 in the world for aids