Answer:
A mutation
Explanation:
This is abnormal and can only be described as a mutation.
That should be the spinal cord which rests inside the spinal vertebra.
Answer:
A concentration gradient occurs when the concentration of particles is higher in one area than another. In passive transport, particles will diffuse down a concentration gradient, from areas of higher concentration to areas of lower concentration, until they are evenly spaced.
Explanation:
Hope this helps c:
Apparently it is ATP as deduced from the last line of text and no model to refer to.
It is mostly glass and fiber glass