In the following passage some words have been deleted. Fill in the blanks with the help of the alternatives given.
Passage:

Without water(1).......... animal can survive.In desert regions the greatest (2)........ to life is dying of thirst. But many creatures are able to make useof(3)............ little water that exists in arid areas. One of nature’s masterpieces (4)............ creatures equipped to (5)............ with desert life is the hardy camel.