Each olfactory cells responds to a single odorant molecule. True or false? Explain
your choice.

Occurs when the immune system attacks the body. lupus cancer sickle cell disease huntingtons disease

The best way to get vitamins and minerals is to  a.  eat more fruits than vegetables.    b.  drink as much fruit juice as possible.    c.  take vitamin supplements.    d.  eat a balanced diet.

Which health risk is associated with tanning beds