A.They published scientific evidence to determine second hand smoke as a cause of cancer.B.They denied the suspicion that second hand smoke may cause cancer.C.They discovered all the causes of cancer.D.They agreed that moderate smoke won’’t cause cancer.
A.They published scientific evidence to determine second hand smoke as a cause of cancer.
B.They denied the suspicion that second hand smoke may cause cancer.
C.They discovered all the causes of cancer.
D.They agreed that moderate smoke won’’t cause cancer.