When the diaphragm contracts, the size of the thoracic cavity , the pressure inside the thoracic cavity , and air flows the lungs.

increases, drops, into

Explanation:

dna damages cause changes in the structure of the genetic material and prevents the replication mechanism from functioning and performing properly. dna damage and mutation have different biological consequences. while most dna damages can undergo dna repair, such repair is not 100% efficient.

answer; polycythemia is the correct answer;