(directed to grell) if u search this i commented on it and from there u can find me

What is von petzinger really interested in finding out through her studies in cave art?

According to the article in wiki answer, digital communication systems have more benefits than analog systems. they are faster and more flexible, and they offer better performance than analog communication

This is a form of government run by elected leaders.this is a type of government in which a group of individual states are united under astrong, central government.this is a system of government in which the people participate directly in making allpublic policy.this is form of government in which a monarch is the head of state but his or her powersare restricted by law, usually within a parliamentary system.in this type of government, the elected head of the executive branch acts independentlyof the legislative and judicial branches.in this type of government, there is no clear-cut separation of powers between thelegislative and executive branches, though the legislative has most of the governmentalpower.in this type of government, the institutions of the state are governed as a single unit,with one constitutionally created legislature.this is a type of government in which power is held by a single, self-appointed ruler.