Which of the following pairs of individuals have a higher concordance rate of osteoporosis than the rest?

Standardized English language tests do a fairly good job of measuring knowledge of grammar

and vocabulary as well as oral and written expression. Indicate whether the statement is true or false

Serious problems related to MDMA use include

a. heart arrhythmias. b. fatal heat exhaustion. c. severe liver damage. d. all of these.