The skin synthesizes Vitamin ________, which is essential for bone growth and maintenance.
Fill in the blank(s) with the appropriate word(s).
D
Being in sunlight for as little as 15 - 30 minutes per day allows the skin to initiate the metabolism of vitamin D, which is essential for bone growth and maintenance.
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The most important distinction between drug users and nonusers is the extent of _____.
A. their response to family problems B. their responses to peer pressure C. use of legal substances D. conventionality
The immune system protects the body against pathogens, and the lymphatic system removes damaged cells
Indicate whether the statement is true or false
Gonorrhea is usually asymptomatic in men.
Answer the following statement true (T) or false (F)
There are 31 pairs of cranial nerves.
Answer the following statement true (T) or false (F)