The phrase "heavily altered" is correct and can be used in written English.
It is used to emphasize the extent to which something is changed or modified. For example, "The original plan was heavily altered to accommodate the new regulations."
In 1870, Mr. Miller enlarged 200 East 86th Street to its present appearance, adding a Charles Addamansarde mansaroofoof and corner tower (since heavily altered) to what was described in the alteration permit as "stores, billiard saloon and lodge rooms".
They inhabit a world heavily altered by humans.
"These pieces have not been 'heavily restored,' they have been heavily altered," he wrote.
These meteorites are so heavily altered by water that it is unclear whether they once contained chondrules.
Of course, listing a building doesn't necessarily afford it protection from demolition or even from being heavily altered.
Planned Parenthood has sent a report to Congress saying controversial videos of officials discussing fetal tissue for research were heavily altered by anti-abortion activists.
Tan previously caused consternation among Bluebirds' fans by changing the club's playing kit from blue to red and heavily altering their crest in 2012.
Trump said "the world has crashed" since he first bought the Menie estate and dunes in 2005, provoking a long-running battle with local residents, councillors and environmental groups about his proposals, which has involved heavily altering the legally protected rare dunes.
Halo became an exclusive game for Microsoft's Xbox video game console, and Bungie Studios rewrote the game's engine, heavily altering its presentation and turning it into a first-person shooter.
For example, the availability of cover [ 25] and scents of mammalian predators [ 26] heavily alter foraging behaviour [ 27] and can change with the season [ 28] or the time of a day [ 29, 30].
The latter tend to be lighter-colored candy-striped friable sand, locally with heavily pedogenically altered "purple mottled beds" and/or resistant ledge-forming upper Flattops One sandstones at the contact (such as at Martha's Butte).
