They wanted them to know & follow the law
Here are some of their achievements:
- theory of radioactivity
-discovery of a new element, polonium
-discovery of another element, radium
- developing new ways of separating radioactive isotopes
-discovery of nuclear energy ( by Pierre and one of his students)
From the fourth day after fertilization until the end of eight week, the unborn baby is called an embryo and from 9th week is referred as fetus until the end of conception.It is an organism in the earliest developmental stage.
