We have 20 different amino acids in our bodies.
I believe it is the retina that changes shape to focus on distant objects.
In order for gas to leave a planet it needs to be hot enough and to overcome the planets gravity. The outer planets are colder and are very big compared to earth.
The lungs are lined with epithelial cells:)
Answer:
Flat
Explanation:
The atlas is one of the two upper cervical vertebrae, also known as C1, which is the topmost vertebra of the spinal column. ... It is the vertebra that is in contact with the occipital bone, a flat bone located at the back portion of the head.
