QUESTION NUMBER ONE IS A AND FOR QUESTION NUMBER TWO IT IS B
Answer:
The two strands are held together by hydrogen bonds between the bases, with adenine forming a base pair with thymine, and cytosine forming a base pair with guanine.
Explanation: hydrogen bonds
The nucleus is responsible for storing dna as well as the instuctions for protein synthesis
Step-by-step explanation:
When sea level change happens it can be decreased OR increased. It mostly happens when global temperatures change. Sometimes the ocean freezes, glaciers melt back into the ocean. It changes because of the amount of water being added or decreasing.
