But statistically, driving on a snowy Monday afternoon in January is not even close to the most dangerous time to drive. The most dangerous month, it turns out, is August, and Saturday the most dangerous day, according to the National Highway Traffic Safety Administration. All told, auto accidents kill more than 40,000 people in the U.S. each year; they are the No. 1 cause of death for people between the ages of 1 and 34.
: the condition or property of being dimorphic or dimorphous: as a (1) : the existence of two different forms (as of color or size) of a species especially in the same population (2) : the existence of an organ in two different forms b: crystallization of a chemical compound in two different forms.
Sexual dimorphism is the difference in morphology between male and female members of the same species. Sexual dimorphism includes differences in size, coloration, or body structure between the sexes. For example, the male northern cardinal has a bright red plumage while the female has a duller plumage. Male lions have a mane, female lions do not.