The answer is osteoporosis
Osteoporosis is a condition when the bone(osteo) density is decreased, makes them look like having pore or spongy. It is found frequently in the elder woman that has been menopause for a few years.
Estrogen has a role in bone remodeling which causes a protective effect on woman before menopause.
Answer:
Two examples of a body system are the respiratory system and digestive system.
Explanation:
When antibiotics kill too many good bacteria in the digestive tract fecal transplants can help replenish bacterial balance
Answer:
convection in the asthenosphere