A、The rapid reduction of tropical forests. B、The increase of global temperature. C、Emergence of an entirely new species. D、The s

An extraordinary tree frog thought to have died out more than a century ago has been rediscovered in India The discovery was made by renowned Indian biologist Sathyabhama Das Biju and a team of scientists, in the jungles of north-eastern India. It is hoped the frogs might now be found across a wide area, from China to Thailand. Studies of the frog have also led scientists to reclassify it as an entirely new species.
    The newly uncovered frogs were first found by accident in 2007, during a search for other animals. Although the frogs have since been found in significant numbers, [2]they are far from safe, Mr. Biju warned, with tropical forests being cut down at alarming rates to make way for agriculture and human settlements.
1 Where were the tree frog found?
2 What threatens the existence of the tree frog?