All of the following are true regarding growth spurts EXCEPT:
1.teenagers gain approximately 50% of their adult weight.
2.teenagers gain approximately 20 to 25% of adult height.
3.girls gain on average 18 pounds, and boys, 20 pounds.
4.teenagers gain 90% of their total bone mass.
4
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Sugar acts as a food preservative by
A. reducing the amount of free water in food. B. increasing the acidity of food. C. directly killing disease-producing microbes. D. increasing the water activity of the food.
The human body needs vitamin K to ________.
A. release the energy stored in glucose B. form active blood clotting factors C. synthesize DNA D. absorb phosphorus from foods
What is a common risk factor for the development of prediabetes?
a. pear-shaped body b. high blood pressure c. elevated cholesterol levels d. genetic predisposition e. fatty liver disease
Which factor currently accounts for 80% of the increase in life expectancy of people aged 65 years and older?
a. improved diet b. improved housing c. safe water d. lower levels of stress e. advances in medicine