A bear's size is normally expressed in terms of weight, which is difficult to judge due to individual variations in height, thickness of fur, and physical stature, as well as the observer's proximity to the bear and particular level of stress.
(A bear's size; is normally expressed; ) (weight; is; difficult to judge due to individual variations in height, thickness of fur, and physical stature, as well as the observer's proximity to the bear and particular level of stress)
A bear's size weight
is normally expressed is
difficult to judge due to individual variations in height, thickness of fur, and physical stature, as well as the observer's proximity to the bear and particular level of stress