Answer:
B is correct
Explanation:
This is because in DNA, purines (A and G), pair with pyrimidines (C and T), and more specifically, adenine pairs with thymine and cytosine pairs with guanine. Per this base pairing, B should be the right answer.
D: fitness journal
It’s correct
The answer to your question would be Carbon, oxygen, hydrogen, and nitrogen.
White dwarf
Option 3.
<u>Explanation:</u>
White dwarf are very old in existence in the world. The white dwarfs are at least about twelve to thirteen billions years old in existence. These are only slightly younger than the universe itself.
Thus these white dwarfs provide a clear idea about how old the universe is and since when it has come into existence itself. Although not exact but some what idea can be made that it is about more than thirteen billion years old and came into existence back then.
