The common designation of age 65 as the beginning of old age is based largely on
a. the average age of retirement in the United States.
b. the individual aging process that lowers productivity after age 65.
c. historical custom.
d. the proportion of people alive past that age.
Question 2
Despite the decline in fertility in Mexico, that country will not experience the same demographic dividend as China because
a. its fertility decline has been much slower over time.
b. infant mortality has been much higher in Mexico than in China.
c. the status of women is lower in Mexico than in China.
d. the high rate of Mexican out-migration dampens the demographic dividend.
Average winter rainfall and variation in rainfall among sites inhabited by Suromalus ater
Common structural features
Beta-lactam antibiotics: The beta-lactam ring is common to many different classes of antibiotics.
The two most common deformities of the spinal column are scoliosis and kyphosis.
Basic classification of streptococci-based on hemolysis.
Incidence of the Ten Most Common Cancers