The following is the most sedating antihistamine: (1)

What is the mechanism of action of ethionamide? (1)

Which mucosal protective agent should not be given with proton pump inhibitors? (1)

Aprepitant is classified as a: (1)

What is the primary mechanism by which antacids, such as calcium carbonate, relieve gastro oesophageal reflux disease (GERD) symptoms? (1)

Rilpivirine inhibits the activity of the following viral enzyme: (1)

The following is the mechanism of action of bulk-forming laxatives: (1)

The following is the primary mechanism of action of theophylline: (1)

The following drug provides prompt relief during acute attacks in asthma: (1)

Researchers studying a nation find that families historically had many children while death rates were also high. As sanitation and medicine improved, deaths declined while births remained high, producing rapid population growth. Years later, birth rates also began declining as the country industrialized. Which theory best explains this pattern?