<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).
Answer:
It can form a variety of carbon skeletons and contain functional groups
Explanation:
<u>Carbon atom is important in biology because it can form a variety of carbon skeletons and contain functional groups</u>. These enable carbon to be able to bond with itself and a variety of other elements. Thus, carbon is able to be the major component of important biomolecules of life such as deoxyribonucleic acid, carbohydrate, proteins, and lipids.
Mutations produce random changes in an organism's genetic code. Mutations can occur in non-reproductive cells and then they will not be passed to the next generation, therefore will not contribute to variation. Only mutations that occur in reproductive cells are passed on to the next generations and contribute to genetic variation in a population.
Answer:
Hi! So what exactly do you need help with? If you want the whole thing helped with/done, nobody's going to do that whole thing for a measly five points... I suggest reposting it with a higher point prize.
Explanation:
Sexual reproduction in important for human race to survive, ultimately making it essential for every individual.
