Yes, the annual salary of the US president can be increased or decreased by a bill passed in Congress & sent to the White House to be either signed into law or vetoed. As an aside, recessions are not the best time for any salary increases by anyone in the Federal government of the US.
DECREASE
decreased
Technically yes. The US constitution says the president's salary may not be increased or decreased during "that period for which he was elected." Since the president is elected for a period of four years, it could theoretically be changed during his first term of office to take effect after that term expires, so if he was re-elected, then it could change while he was in office.
broke his promise and increased taxes
Decreased.
It has decreased.
increased
The individual heartbeat, or contraction, can be modified by input from the sympathetic and parasympathetic nervous systems. This modification can include increased or decreased contraction ratios, increased or decreased stroke volume and increased or decreased rate of contraction.
Increased.
Decreased.
it has increased nd decreased depending on what animals and regions
The individual heartbeat, or contraction, can be modified by input from the sympathetic and parasympathetic nervous systems. This modification can include increased or decreased contraction ratios, increased or decreased stroke volume and increased or decreased rate of contraction.