Arrange the following in a logical sequence. P remains fixed. P= Short-term heat waves, Q= of lakes across the globe according to a new R= along with long-term global warming, S= study published in Science Advances on March 21, 2025 T= are reducing the levels of dissolved oxygen (DO) on the surface

1. RTQS
2. QRTS
3. TQSR
4. STQR