2019 Reading Comprehension - Ecology and Climate Change

On the basis of the above passage, the following assumptions have been made : 1. Global warming is a frequently occurring natural phenomenon. 2. The impending global warming will not adversely affect small mammals. 3. Humans are responsible for the loss of the Earth's natural resilience. Which of the above assumptions is/are valid?

• 1 and 2 only
• 3 only
• 2 and 3 only
• 1, 2 and 3