Material confeccionado por la Sala de Inglés / Geography del Colegio Seminario para su uso en los cursos de tercer año. Ernesto Correa, Alexia Cortés y Gabriela Manzano - 2016

1. A quick overview to its evolution
Geography Sala – Colegio Seminario

2.  According to the 2015, revision of the
World Population Prospects the total
population was 3,432,000 in 2015,
compared to only 2,239,000 in 1950. The
proportion of children below the age of 15
in 2015 was 21.4%, 64.2% was between 15
and 65 years of age, while 14.4% was 65
years or older.
 http://esa.un.org/unpd/wpp/

4. So…
What is Natural Change?
Take five minutes to
make your own
definition of the
concept.

5. Average figure that
represents the
number of years a
healthy person is
expected to live in a
certain country.
Which
factors
affect life
expectancy?