Changes in the commercial fishing industry have historically been known to cause population increases and decreases in Pelican.
(Changes in the commercial fishing industry; have been known; T:historically) (Changes in the commercial fishing industry; to cause; population increases) (Changes in the commercial fishing industry; decreases; L:in Pelican)
Changes in the commercial fishing industry Changes in the commercial fishing industry Changes in the commercial fishing industry
have been known to cause decreases
T:historically
population increases
L:in Pelican