The phrase "an impact over time" is correct and usable in written English.
It can be used when discussing the effects or consequences of something that develop or change gradually over a period.
Example: "The study revealed that there was a significant impact over time on the local ecosystem due to climate change."
Alternatives: "a lasting effect" or "a gradual influence".
But the benefit of the doubt factor has an impact over time.
Female and minority lawyers, he said, are often hired away from law firms by corporate law departments, and that will have an impact over time.
But only 13percentt of emissions are expected to come from these countries by 2100, meaning their efforts will have less of an impact over time as the share of emissions from other nations increases.
Brighton manager Gus Poyet is confident the club's new head of football operations David Burke will make an impact over time.
Although the sample size was small, there is the possibility that the Living with Hope Program has a short effect and does not have an impact over time.
Employees have a limited attention span, so find a way to make a huge impact over time.
In the present study, we identified the prognostic factors for long-term outcome after NAC, considering that they could have an inconstant impact over time.
By contrast the freezing of the rate of thresholds for a whole range of government benefits has a compounding impact over time.
"Even a small-scale rate of deforestation will have a large impact over time," says study co-author Pontus Olofsson of Boston University.
Leading scholars such as Henry Mintzberg have shown how organizational structure and other design features can have a profound impact over time on how people think and behave within an organization.
But most economists believe it will make a notable impact over time, just as electricity only really made a big difference to industry when factories were reorganized for mass production.
