The exact cause of a benign tumor is often unknown. ... In the case of tumors, dead cells remain and form a growth known as a tumor. Cancer cells grow in the same manner. However, unlike the cells in benign tumors, cancerous cells can invade nearby tissue and spread to other parts of the body.
<span>What structure contains special enzymes that muscle cells need to utilize oxygen?
Enzymes.
</span>
Answer:
Flying on an airplane, riding a car, train, or boat.
Explanation:
The different motions that cars or airplanes make can make us feel uneasy or unwell. Our bodies aren't used it to it, and some people are more sensitive to the motions.
