Physiological protective adaptations include the poisonous properties of the lymph, blood, or skin of inedible species and the excretions from malodorous glands of bedbugs, beetles, skunks, and beavers, which frighten away enemies.
Learn why some CEO's make a $1 salary. Some CEOs of major companies like Facebook and Google only claim an annual salary of one dollar. However, some still receive significant stock options and bonuses adding to their income and existing fortunes.
According to the report by the Economic Policy Institute, CEOs of the top 350 publicly owned U.S. companies earned, on average, $16.3 million a year -- 303.4 times more than the average worker earned in 2014. The ratio of CEO-to-average worker pay is up 244.7 percent since 1965, when it was 20-to-1, the report states.