2019 Environment - Global Warming, PETM, Geological History

Based on the above passage, the following assumptions have been made :1. Global warming has a bearing on the planet's biological evolution.2. Separation of land masses causes the release of huge quantities of carbon into the atmosphere.3. Increased warming of Earth's atmosphere can change the composition of its flora and fauna.4. The present man-made global warming will finally lead to conditions similar to those which happened 56 million years ago.Which of the assumptions given above are valid?

• 1 and 2
• 3 and 4
• 1 and 3
• 2 and 4