Answer: A
Explanation:
Our universe was born from the Big Bang about 13.5 billion years ago. ... Our solar system began forming about 4.6 billion years ago within a concentration of interstellar dust and hydrogen gas called a molecular cloud. The cloud contracted under its own gravity and our proto-Sun formed in the hot dense center.
I believe the answer is a
The answer is A: yes
Hope this helps
Answer:
The right answer is Spindle.
In cell division, the mitotic spindle or achromatic mitotic apparatus of a cell refers to a structure of microtubules arranged in a spindle-shaped (i.e. swollen in the middle) bipolar assembly.
Explanation:
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<span>Dr. Stott is researching epigenetics. Epigenetics is the study of changes that occur in gene expression with no changes in the actual gene sequences. Environmental factors can influence gene expression without changing the DNA sequence, making this the study of epigenetics.</span>
