物价上升的原因是需求的增加。The cause of (reason for) higher prices was an increase in demand.
或: Because the demand has increased, the prices are higher. 或: An increase in demand results in higher prices.
或: The demand has increased. As a result, the prices are higher. 或: If there is an increase in demand, then prices rise.
译：他们取得的成果是由于他们的刻苦努力。What they have achieved results from their hard (=painstaking) work.
As a result of all these factors, governments are becoming increasingly dependent on scientists for planning appropriate programs and __________.