As water is heated by the sun, it becomes less dense and rises. what reasoning explains the decrease in density of warming water?

What behavior of an expectant mother is unhealthy for the fetus

In a two to three page paper, examine the history and development of the healthy people initiatives. discuss some of the successes and shortfalls of the three initiatives thus far; including healthy people 2000, healthy people 2010, and healthy people 2020. be sure to include statistical data from the initiatives to support your position. don't forget to cite your sources.

The 1.5 mile run test and the 12 minute swim test are considered as what kind of test ?