1.  Each one of these big herbivores is a mountain of valuable food to any predator that can exploit it.

2.  On one hand, according to their study, some introduced fish and shellfish have become valuable food and sportfishing species.

3.  They also prey on other ants and insects that are valuable food for toads and lizards.

4.  It is a valuable food medicine in rheumatism due to its potash content.

5.  Japan says the ban denies the world a valuable food source.