To test an herbal treatment for depression, 100 volunteers who suffered from mild depression were randomly divided into two groups. Each person was given a month’s supply of tea bags. For one group, the tea contained the herb mixed with a spice tea, and for the other group, the bags contained only the spice tea. Participants were not told which type of tea they had. They were asked to drink one cup of the tea per day for a month. At the end of the month, a psychologist evaluated them to determine if their mood had improved. The psychologist did not know who had the tea with the herbal ingredient added. True or false: This study is an experiment

Which kind of organism is a heterotroph?

How and why has british society changed over the last 50 years?

Which of the following selections is least useful for supporting the claim that states intentionally built unequal school systems? question 1 options: the supreme court ruling in plessy v. ferguson (1896) wrote into law that america had two separate societies: one black and one white. it was very clear by the mid-1900s that southern states had expertly built separate educational systems. these schools, however, were never equal. states with laws keeping schools segregated never gave equal amounts of money to their black and white schools. ten years after brown, fewer than 10 percent of southern public schools had integrated. some areas did not comply at all.