Answer:
Bones need to be set immediately, before they begin to heal, or they may heal crooked.
I believe the answer to your question will be atrioventricular but don't cross out pulmonary it could possibly be the answer.
Answer:
A
Explanation:
Pollution is and can be poisonous to some environment and to organism. It also harms the thing in that environment.
Pretty confident that it is A, judging by that the word composition is used as a combination or a ratio of 2 things. Also none of the other options make sense.
