The Human Development Index (HDI) assess the development of a country and it is a comparison study among different nations in a particular period of time.
The key dimensions in human development are: a long and healthy life, access to education and a decent standard of living.
The health dimension measures life expectancy at birth, the education one is assessed by years spent at school and in further training facilities, the standard of living is determined by gross national income per capita.
Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities.
