a. can have both positive and negative
Answer:
D.) Oxygen-poor
Explanation:
The pulmonary veins are the vessels that carry the oxygen-rich blood to the left atrium
The word abuse has a much stronger connotation than "bullying" which is usually associated with teasing. The former, however, is typically associated with emotional and/or physical harm on the body. If someone is being "bullied" and it involves harm on the body, then it could definitely go hand-in-hand with abuse.
