3 eventos reconocidos que hayan tenido impacto para la formación de la tabla periódica como la tenemos hoy en día

Throughout united states history, new groups of people have been given voting rights. this usually occurs through

In some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. the production of sterile male ligers is an example of read the following scenario to answer the following question. in some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. the production of sterile male ligers is an example of a postzygotic barrier the founder effect sympatric speciation a prezygotic barrier

Multiple-choice the word "democracy" means: (a) "rule by the people" (b) "minority rule" (c) "individual rights" in a democracy, election results are protected against dishonesty by: (a) laws (b) customs (c) values the type of government in which the people are represented by elected officials is sometimes called a: (a) monarchy (b) republic (c) totalitarian state in most democracies, the only legal requirements for voting or holding public office are based on age, residence, and: (a) religion (b) citizenship (c) personal wealth in an election, political parties give voters a choice among candidates who tend to represent different: (a) ethnic groups (b) religious groups (c) interests and points of view