Sustainable Development
what does sustainable concern?
environnement
What is the half-life?
Time required for half of the radioactive nuclei in a sample to decay.
What is the Declaration of the Rights of Man and of the Citizen?
In 1789, the French National Assembly adopted this foundational text establishing human and civil rights.
What is a megacity?
A city with more than 10 million inhabitants, such as Tokyo or Mumbai.
What is the mole (mol)?
the SI (International System) unit used to measure the amount of substance in chemistry.