Explanation:
Hence, the correct answer is 'Nuclear membrane'.

DNA was found to contain only four different chemical building blocks.
Ok, I'm not fully sure but answer B sound right, so I think it's right
The nurse should tell the patient that she will help her to get warm blankets in order for the chill to go away. Feeling of chills after giving birth is a common experience and it happens as a result of vasomotor reactions that occur during birth. Covering the patient with blanket will remove this discomfort.
Answer:
Choice C. Sodium bicarbonate acted as a pH buffer in Solution 2.
Explanation:
Sodium carbonate is used as pH buffering agent. Buffering agent is a type of solution which contains weak base or acid which stabilize the solution when another strong acid or base is added to the solution. If acid is added, the weak base that is present in the solution reacts with it and when base is added, weak acid reacts with it.