A long-lived, slow-growing species, they are gravely threatened by overfishing, habitat degradation and catastrophic natural events such as bushfires.

Personality wise, Jamie is very cowardly and often runs at the first sign of danger, only showing bravery when he or his friends are gravely threatened.

Were Pakistan and its nuclear weapons to fall under the control of Islamic fundamentalists, American security would be gravely threatened.

He contended that goals like universal access would be gravely threatened if the world went to Internet-based services that were unregulated.

The social fabric of our nation could be gravely threatened because they consistently put ideology over common sense.

Ayub himself "felt gravely threatened by Maudoodi".

The Vance-Owen peace plan for Bosnia seemed thereby gravely threatened.

(2) Meanwhile the Spartans at last prepared to defend their own position in Greece, which was so gravely threatened.

This unfortunate land is gravely threatened.

Stocks of tuna in the Mediterranean Sea are also gravely threatened.