Answer:
The unknown radioactive element is present in pitchblende.
Explanation:
Marie Curie was the scientists that mainly worked on the radioactive element. She was the first scientist who won the noble prize in two different fields of science.
The pitchblende was the mineral sample that was noticed by Marie curie during her experiment. Pitchblende contains a more radioactive element that uranium and confirms that she had found a new element.The new element was polonium with hundred times more radioactive than uranium.
Thus, the answer is unknown radioactive element is present in pitchblende.
Gender equality is simply focused on providing men and women with the same equal opportunities (like making it legal for women to own land, or even attend school), gender equity works to correct the historical wrongs that have left women behind (such as societal restrictions on employment).
Since he wants to minimize his monthly payment, he could get his machine from scratch and dent store, where they sell a nearly damaged goods ( such as small scratches), but the good's price will drop significantly.
Try to find the options with 'scratch and dent' on it
