About ritual of tharu caste​

What greek scientist created a screw to move water for irrigation?

Which of the following statements is true about social anxiety disorder? social anxiety disorder tends to develop in early adulthood. social anxiety disorder often co-occurs with mood disorders and other anxiety disorders. social anxiety disorder is relatively rare, with a lifetime prevalence of about three percent in the united states. lesser than 30 percent of adults with social anxiety disorder report humiliating experiences that contributed to their symptoms.

The greatest integer function, shown below, is defined to be the greatest less than or equal to x. f(x) = [[x]]