One popular brand of exercise machine

How does modernization affect ecosystem

In multiple sclerosis, the immune system destroys the substance that coats and protects nerve fibers in the brain and spinal cord. this causes inflammation and injury to the nerves, and the axons don't conduct impulses as well.

Diagram the passage of food through the digestive system. label the organs involved in digestion and absorption and identify the sites where carbohydrates, proteins, and fats are digested.