Problem: The San Marcos salamander, Eurycea nana, is a light reddish-brown translucent salamander about 2--5 cm in length. E. nana is found only in Spring Lake and a portion of the San Marcos River. Which human activity would most likely decrease the ability of the salamanders to survive? Need Assignment Help? Select {responseValue} Public transportation that reduces the number of automobiles that contribute to pollution runoff into the river. Select {responseValue} Tourism that helps fund the educational programs related to river ecosystem conservation. Select {responseValue} The addition of a new food source into the river that limits competition for resources. Select {responseValue} Increasing water consumption that decreases the flow of clean water from the springs that feed the river.