Which word in the paragraph does not pertain to “endemic” species of reptiles?

Directions: Answer the given question based on the following passage:

Thar Desert, also known as the great Indian desert. It is spread over four states in India, namely, Punjab, Haryana, Rajasthan and Gujarat and two states in Pakistan and covers an area of about 4,46,000 square kilometres. The average annual rainfall of the region varies from 100 to 500 mm. It is distributed very erratically, occurring mostly between July and September. One unique feature of this desert is that there is neither an oasis in it nor any artesian well. No native cactus or palm tree breaks the monotony of the vast expanse. Due to the diversified habitat, the vegetation and animal life in this arid region is very rich. About 23 species of lizards and 25 species of snakes are found here and several of them are endemic to the region. Some wild life species which are fast vanishing in other parts of India, are found in the desert in large numbers such as the Great Indian Bustard, the Blackbuck, the Indian gazelle and Wild ass. The increase of human and livestock population in the desert has led to a deterioration in the ecosystem resulting in degradation of soil fertility and vegetation.