An experiment was conducted to test the effectiveness of a blood pressure drug. Before the trial, all patients’ blood pressure was recorded. One hundred patients were given the drug for six months, and one hundred different patients were given a placebo (sugar pills). After six months, all the patients’ blood pressures were measured. What is the experimental group for this experiment?

How do water’s relative densities as a solid and a liquid differ from that of most other substances? water’s solid and liquid forms have different densities, while most other substances have solid and liquid forms with similar densities. water’s solid and liquid forms have similar densities, while most other substances have solid and liquid forms with different densities. water’s liquid form is less dense than its solid form, while the opposite is true of most other substances. water’s solid form is less dense than its liquid form, while the opposite is true of most other substances.