Answer:
1. Marie Curie studied uranium radiation and measured radiation in pechblende, a mineral that contains uranium. She was the first to use the term 'radioactive'. She discovered two new elements: polonium and radium.
2. Rosalind Franklin: Through the images taken by X-ray diffraction, she made important contributions to the understanding of the structure of DNA, these images revealed the double helix shape of this, she also carried out studies on the structure of RNA, viruses, carbon and grafito.
3.Clara Barton organized the American Red Cross on May 21, 1881
4. Irene Joliot Curie did research in the field of nuclear physics and looking for the structure of the atom, particularly in the structure and projection of the nucleus. These investigations were fundamental for the discovery of the neutron. She and her husband managed to artificially produce radioactive elements
