Answer:
repetitive force
Explanation:
repetitive forces like jumping up and down
and running long distances which cause tiny cracks in the bone.
I think RNA, DNA doesn't have virus...
Answer:
The Importance of Good Sight and Hearing When Driving. ... The lives of the driver, passengers, pedestrians and other motorists are in a heighten state of vulnerability. Careful driving requires engagement of visual and auditory senses to make informed, often very quick decisions to navigate safely
Explanation:
Herpes, gonorrhea and Chlamydia.
