I think the egg because it’s the start of their life cycle, or something. I don’t think the chicken came first bc the egg would be the baby and the chicken the adult.
Answer:
The answer is B.
Explanation:
The answer is B. Biotic factor because biotic factor means living things.
Answer:
<em>Hope this helps</em>
Explanation:
<em>Streak is the color of a minerals powder when it is crushed. Some minerals have a different color powder than their actual color. Every mineral has an inherent streak no matter what color it is. ... Most mineral references don't make a distinction between a white or colorless streak, since the difference is minimal.</em>
The MC1R gene provides instructions for making a protein called the melanocortin 1 receptor. This receptor plays an important role in normal pigmentation. The receptor is primarily located on the surface of melanocytes, which are specialized cells that produce a pigment called melanin.
I believe the answer is Myelin sheath. Myelin is a fatty substance that surrounds the axon of some nerve cells (neurons), forming an electrically insulating layer. It is essential for the proper functioning of the nervous system. It is an outgrowth of a type of glial cell, produced by the process called myelination or myelinogenesis.