If you google the words you need to find, it will give you what you're looking for. Don't copy word for word.
In recent years, fluoride is an essential nutrient necessary for producing healthy teeth where water and toothpaste companies fluoridate the toothpaste and public water supplies.
However, studies shows that fluoride is more poisonous than lead for in hypersensitive individuals, it can cause skin eruptions such as atopic dermatitis, eczema and urticaria. According to National Cancer Institute, fluoridation of water and toothpaste has been linked to significant increase in genetic damage that lead to bone cancer called osteosarcoma.
Moreover, there are also reports that shows artificially fluoridated water, can inhibit enzyme systems, damage the immune system, contribute to calcification of soft tissues, worsen arthritis and cause dental fluorosis.
In the end, further studies and research must be conducted to fully address the truth about fluoride and fluoridation.
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.
Answer:
A
Explanation:
Metabolism is a collection of chemical reactions that takes place in the cells of body.
Adults have fast metabolism rate and younger people have slow metabolism rate.
A: maintenance is the final stage --> thus this answer is the only appropriate one.
