Osteoporosis is characterized by a decrease in bone mass and density; bone fragility results. What is the best way to keep your bones strong and healthy?

a. exercise and eat a diet rich in calcium and vitamin D.
b. have your bone density checked by a doctor once a year.
c. take calcium and vitamin D supplements regularly.
d. stop smoking.

Ab+cd-> ad+bc is what kind of reaction

Look at the graph about the barriers to working out. what would 20 percent of the population report as a barrier for working out? inability to devote thirty minutes a day to working out lack of interest with creating a detailed workout schedule not having enough money to pay for yearly gym membership living in a community that does not have parks or a gym facility

Fibers from the medial side of each eye cross over to the opposite side of the brain at the