The phrase "altered over time" is correct and usable in written English.
You can use it to describe changes that have occurred gradually throughout a period.
Example: "The landscape has been altered over time due to natural erosion and human activity."
Alternatives: "changed over the years" or "modified throughout history."
A network with that many users and hundreds of millions of dollars in revenue is far from a dead network, though its pitch may have altered over time as it starts to push more on its specialization in image recognition and visual search.
A pure restoration is what the owners envision for the street-level facade of the building, which was altered over time.
He hasn't altered over time, and he lacks the neuroses I have, so our 24-year friendship has been smooth sailing.
Crucial to that lead-out train is Mark Renshaw, though when he is asked whether their relationship has altered over time he replies simply that it's "the same".
"The houses had been heavily altered over time and had very little left of the original 1830's design," he said, so the new windows were accepted.
Staffers drafted a set of talking points titled "hot topics," which has been altered over time and includes responses to several questions related to his spending practices.
Given the changing demography of the student population, this may alter over time.
However, acute WAD cohorts should be studied with MRI follow-up examinations to find out how ligament structure may alter over time.
Third, the cross-sectional nature of this study – particularly the use of a survey, indicates that the respondents provided an incomplete snapshot of their views, which might alter over time.
Second, macrophage activity may alter over time as a consequence of tumour-induced immune dysfunction, since nitric oxide production, which is a major effector molecule for tumour cell killing, was suppressed in macrophages of tumour-bearing mice [ 32].
