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.
The first vertebrates to come onto land were fish-like animals that developed lungs and could thus stay on land for extended periods.These evolved into terrestrial amphibians â¦ (although many amphibians require water in which to lay eggs, and some are aquatic).+ 6 others found this useful.he group of  vertebrates that are terrestrial (land-dwelling) â¦ are called  tetrapods. The first tetrapods evolved in the late Devonian. They  were amphibious creatures that spent part of their lives in water.