id	keyword
alces-21	human
alces-21	activity
alces-21	moose
alces-21	density
alces-21	model
alces-21	distance
alces-21	use
alces-21	habitat
alces-21	mean
alces-21	houses
alces-21	sex
alces-21	risk
alces-21	alces
alces-21	et al