Final answer:
The student likely encountered a common species of Nevada scorpion, which is nocturnal, uses venom to subdue prey, and gives birth to live young that are carried on the mother's back until they molt at least once.
Step-by-step explanation:
The scorpion you're asking about, based on its size and presence in Nevada, is likely one of the many species of scorpions found in the desert regions of the United States. Scorpions are characterized by a tail with six segments, the last of which bears a venom-injecting barb and venom glands. They're nocturnal predators of small insects and arthropods, using their pincers to catch prey, and either crush it or inject venom to kill or paralyze it.
While there are thousands of species of scorpions worldwide, only a few have venom that is harmful to humans. Scorpions in Nevada tend to seek shelter during the day under rocks, in holes, or other secluded spots. When scorpions give birth, their live young are carried on the mother's back until they have gone through at least one molt. Depending on the species, scorpions can live for four to 25 years.