It helps with your cardio excercies
<span>From the Spanish port of Palos, Italian explorer Christopher Columbus sets sail in command of three ships—the Santa Maria, the Pinta, and the Nina—on a journey to find a western sea route to China, India, and the fabled gold and spice islands of Asia.</span>
Dana (30) most likely due to people becoming more stable in "Mid-Life," A range from around 25-45. It starts to become unstable around 50, so my guess would be Dana (30)
The answer is c people removed wetlands to build cities
