The persistence of rhythms in the absence of a dark-light cycle or other exogenous time signal (i.e., a Zeitgeber) clearly seems to indicate the existence of some kind of internal timekeeping mechanism, or biological clock.
Canada is a federation, which means powers are shared between federal and provincial governments. Head of Government: Prime Minister. Queen Elizabeth II is Canada's official head of state, and is represented in Canada by the Governor General.anada is a federation, which means powers are shared between federal and provincial governments. Head of Government: Prime Minister. Queen Elizabeth II is Canada's official head of state, and is represented in Canada by the Governor General.
Quick Answer. Canada does not have a president. The executive branch of the Canadian government consists of the Crown, who is represented by the Governor General, the Prime Minister and the Cabinet. Continue Reading.