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.
1 Average CEO compensation was $15.2 million in 2013, using a comprehensive measure of CEO pay that covers CEOs of the top 350 U.S. firms and includes the value of stock options exercised in a given year, up 2.8 percent since 2012 and 21.7 percent since 2010.