Answer:
The environment challenges him by making him dehydrated and both mentally and physically hurt. “Uncle cautioned him to make the water in his gourd last as long as possible. It was the hardest thing Salva had ever done, taking only tiny sips when his body cried out for huge gulps of thirst-quenching, life-giving water.
The purpose is because some one must of sayed that in a story or a title so you don't want to take what they sayed it's like steeling
Your gonna have to give us a summary of the selection because we don learn the same things you do. After you explain the summary maybe then we can help you with this question.
The answer is simile due to the use of like
