Original sentence: Bears, such as the Silvertip Grizzly found in parts of North America, have a sense of smell seven times stronger than the bloodhound.This is useful for finding food underground, where they use their powerful claws to dig for burrowing animals and nests, as well as roots, bulbs, and insects.Using their olfactory sense, bears can detect food from up to 18 miles away; because of their immense size they often scavenge new kills, driving away the predators in the process
Edited sentence: Bears can detect the scent of food from up to 18 miles away; because of their immense size they often scavenge new kills, driving away the predators (including human hunters) in the process.Bears, such as the Silvertip Grizzly found in parts of North America, have a sense of smell seven times stronger than the bloodhound, essential for locating food underground.Using their elongated claws, bears dig deep trenches in search of burrowing animals and nests as well as roots, bulbs, and insects