The answer is A. That is the most reasonable answer and I’m so sorry if it’s wrong. Hope that helps. Feel free to ask me more questions!!
:)
Answer:
abstain, or refrain from, sexual activity
I believe it’s carbon dioxide, because you use your respiratory system to breathe in oxygen, and oxygen goes through your circulatory system. And you breathe out CO2.
Answer:
Piano
Explanation:
Because it has the larger mass
