<u>Answer:</u>
Option (3)
The arms mostly contains old blue and blue-white stars
<u>Explanation:</u>
Spiral arms are the regions in stars extending from the middle of spiral galaxies and the barred spiral. Those long, thin areas look like a spiral and therefore give their name to spiral galaxies.
Spiral arms, though, include many young, blue stars, that render their arms so bright (due to the high mass density and the fast stellar forming rates).
A polymer composed of many glucose units
Answer: Incorrectly paired nucleotides that still remain following mismatch repair become permanent mutations after the next cell division.
Explanation: If they replicated than the entire thing would copy that and would be permanent.
Chlorophyll absorbs sunlight to be used in photosynthesis; therefore, a plant producing higher levels of chlorophyll during summer would be advantageous because it is able to absorb more sunlight when more is available. This means that it could potentially use photosynthesis to create more glucose, which the plant uses for functions such as growth.
Answer:
If you don't put a tittle I can't help you
Explanation:
