During old age in normal males, testosterone production decreases, and sperm production stops.
increases.
slows.
continues.

Which plan groups foods according to types and indicates how much of each type should be eaten daily for a healthy diet? a.mypyramid plan b.food guide pyramid plan c.dietary guidelines for americans d.dietary pyramid guidelines

Which of the following is a health risk associated with ground-level ozone? a.cataractsb.skin cancerc.respiratory illnessd.all of the above

Wjat are substances intentionally added to food to produce a desired effect?