Teenage Depression statistics show that teen depression is a common problem 1  : About 20 percent of teens will experience teen depression before they reach adulthood. 2  Between 10 to 15 percent of teenagers have some symptoms of teen depression at any one time.
1. alkaline-relating to or containing an alkali; having a pH greater than 7; alkaline soils derived from chalk or limestone. alkalic. chemical science, chemistry-the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions.
1 Alkaline earth metals. 2  The alkaline earth metals make up group 2 of the periodic table, from Be through Ra. 3  The alkaline earth metals have very high melting points and oxides that have basic alkaline solutions. 4  Their characteristics are well described and consistent down the group.