The Atacama is a famous desert in South America. 1) Name and describe the three principle climate controls of deserts (see lecture notes), and 2) identify which of these best explains why the Atacama has an arid environment? < Use complete sentences, and justify your answer for part 2 of the question. The Atacama is a famous desert in South America. 1) Name and describe the three principle climate controls of deserts (see lecture notes), and 2) identify which of these best explains why the Atacama has an arid environment? < Use complete sentences, and justify your answer for part 2 of the question.