Test for teenage boys' depression. 18th February 2014 --Teenage boys with symptoms of depression who also have raised levels of the stress hormone cortisol are up to 14 times more likely to develop major depression than those without.
Rating Newest Oldest. Best Answer: Most scientists believe that the first life forms were evolved in oceans that were BGA(blue green algae). Many believe that with these algae a simple organism named cyano bacteria was also evolved. Source(s): Shivansh Â· 5 years ago.
1 Sea sponges, widely considered the first animals on Earth, now have some extra ammunition to back up that belief. 2  A molecule present in 640-million-year-old rocks comes from a simple sea sponge, according to genetic analysis done by Massachusetts Institute of Technology (MIT) researchers.