Hello. The answer is zinc.
Answer:
Sonography
Explanation:
sonography is an ultrasound, which is what most people are used to hearing.
That is known as a tumor. Or cancer
Zwitterion
Zwitterion also known as dipolar
ion refers to a substance that has at least one positive and one negative
electrical charge at different locations and the net charge of the entire
molecule is zero. Examples of zwitterions are amino acids.
D. 99% of all living things that have ever existed are now extinct