1.  They take double-degree programs as they a re intended to spend their time as efficiently as possible to brace for their future careers.

2.  The study also found that rapid eye movement sleep (REM) deprivation may alleviate clinical depression because it mimics selective serotonin re uptake inhibitors .

3.  The great population need huge re sours supporting, which leads the increase number of industry and agriculture works so that un-count number of dirty entered air, water, and soil.