Factories, smoking, cars, littering
Skeletal and Muscular:
The muscles help move the bones when you need to move your arm to do something like writing something down or raising your hand.
Skeletal and Nervous:
<span>Sensory receptors in joints between bones send signals about body position to the brain.
Muscular and Nervous:
</span><span>Receptors in muscles provide the brain with information about body position and movement.</span>
Answer:
Explanation:
Causes of Osteoporosis. Osteoporosis occurs when too much bone mass is lost and changes occur in the structure of bone tissue. Certain risk factors may lead to the development of osteoporosis or can increase the likelihood that you will develop the disease.
