Randomized Controlled Studies: This is a study in which 1) There are two groups, one treatment group and one control group. The treatment group receives the treatment under investigation, and the control group receives either no treatment (placebo) or standard treatment. 2) Patients are randomly assigned to all groups.
winds that blow in a steady direction can move a dune. such wind will consistently pick up sand from one side and deposit it to a other side. this causes the entire dune to s â¦ lowly move in the direction if the wind.
1 Using the Pan Tool, you may move the map of Desert Ridge in any direction. 2  To use the Pan Tool, click and hold, and move the map in any direction. 3  When you release the mouse button, the map will stop moving.