Original sentence: By uncovering these tree stumps and logs, scientists are able to uncover information on the ecosystem's past, from a pre-glacier time.Scientists observing the area are able to determine how old the trees were when they died by looking at their preserved remains.They are being found in their original growth position, preserved by what was believed to be a protective gravel casing covering them
Edited sentence: Although it is at the cost of glacial retreat, it is fascinating what scientists are able to discover about the ecosystems past from this natural preservation.By uncovering these tree stumps and logs, scientists are able to uncover information on the ecosystems past, from a pre-glacier time.Scientists observing the area are able to determine how old the trees were when they died by looking at their preserved selves now.What’s even more interesting is that they are being found in their original growth position, preserved by what was believed to be a protective gravel casing covering them