Humans have been _______________ of their heart rate for thousands of years.

The third is a _______________ where every computer is connected to several others, forming a kind of mesh.

Warmer temperatures, longer growing seasons, higher rainfall and long-term climate _______________ made more areas suitable for cultivation.

Cultural attitudes and laws are also key factors in parenting _______________ that are more broadly shared – and that vary by region across the country.

The caveat, however, is that our study found that six minutes of light activity was _______________ to one minute of moderate to intense exercise.

Added ingredients in food can also _______________ the flow of genetic information inside cells.

Only humans and some of our ancestors evolved this kind of _______________ communication.

In 1992, political theorist Francis Fukuyama declared there was finally a solution to the riddle: “Who should rule, and why?” The answer: _______________ democracy.

Myriad factors affect our heart rate, including our age, _______________ conditions, medications, diet, and fitness level.

Another theory is that cultural values may influence our _______________ to the future.