birth rate: the ratio of live births in a specified area, group, etc, to the population of that area, etc, usually expressed per 1000 population per year.
death rate: the number of deaths per unit, usually 1000, of population in a given place and time.
infant mortality rate: the number of infant death
life expectancy: the probable number of years remaining in the life of an individual or class of persons determined statistically, affected by such factors as heredity, physical condition, nutrition, and occupation.
birth control: regulation of the number of children born through the deliberate control or prevention of conception.
dependency ratio: the state of being dependent
family planning:the concept or a program of limiting the size of families through the spacing or prevention of pregnancies, esp. for economic reasons
population pyramids/age-gender structures:
replacement rate:someone or something that takes the place of another.
fertility rate:the birthrate of a population.
ageing population:the length of time during which a being or thing has existed.
population distribution and population density:theact or instance of distributing people and their density.
The 2 of November all the classes of 3º went to Valladolid, we saw its Main Square and we had time to buy things and eat something. Then we went to saw the ¨Vox Balaenae¨ in the Miguel Delibes audience with other high schools. Then we had lunch and we went to the wine museum in Peñafiel Castle.
