In the following passage some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

Comprehension:
The necessity of urban forest is not only to control pollution but also to (1) ________ climate change. It (2)________ tempests as well as unforeseen drought. Off late the world is (3)_________ flash floods. The (4) _________ in Africa has put many countries in famine and children undergo severe malnutrition as a result of famine. Conferences will not provide solutions, only (5) _________ action can control these changes in global climate.