The following girls are all 14 years of age. Which of them most likely experienced menarche at the youngest age?
a. Corrinne's mother experienced menarche at the age of 13.
b. Candace lives in a stressful, unsupportive home environment.
c. Penny lives in a border town where street gangs threaten citizens on a daily basis.
d. Katie lives in a warm, protective home environment.
Question 2
Who is at greater risk of unintended pregnancy the first time they have sexual relations?
a. adolescents who receive comprehensive sex education
b. girls around the age of 16
c. adolescents who take a virginity pledge
d. adolescents from single parent homes
Deciduous and permanent teeth. (A) The deciduous teeth, with the age of eruption given in months; (B
The Upper Cave at Zhoukoudian yields ages of about 25,000 years for Homo sapiens.
A passenger train crosses Stony Creek Bridge in the Rocky Mountains in 1878. Railroads were importan
The age-related increase in spirituality is different for two cohorts born seven years apart. The ...
How long does it take for 90% of a sample of strontium-90 (half-life of 28.8 years) to decay?
Change in Bone Mass over Time In your early years, more bone mass is added than lost in your body