16. what is osteoporosis? how can it affect bones? why is calcium important to bones? 17. what is the function of your body oils? 18. what are the functions of tendons and ligaments? 19. what is the function of collagen?

1.Osteoporosis is a disease in which the bones become weak and are more likely to break. A lifetime diet low in calcium and vitamin D makes you more prone to bone loss.

2. It provides energy, absorbs certain nutrients and maintains your core body temperature.

3.A tendon serves to move the bone or structure.A ligament usually serves to hold structures together and keep them stable.

4.Collagen s responsible for skin strength and elasticity, and its degradation leads to wrinkles that accompany aging.

the overall balanced equation

6co2 + 6h2o > c6h12o6 + 6o2

sunlight energy

where: co2 = carbon dioxide

h2o = water

light energy is required

c6h12o6 = glucose

o2 = oxygen