1. In rare cases, it plummets through the plumbing entirely.

2. And even if the temperature plummets, the housing material continues to fulfil its protective function.

3. The rain seeps down through the snow and forms a bit of terra firma when the temperature plummets.

4. Study findings demonstrated that the Purcell effect breaks down — counterintuitively, the spontaneous emission rate plummets in a strong coupling regime.

5. And as sunken skyscrapers add crumbled concrete to the new forest floor, the soil acidity plummets, potentially allowing new plant life to thrive.

6. The falls are formed as the full width of the river plummets in a single vertical drop into a transverse chasm 1,708 metres (5,604 ft) wide, carved by its waters along a fracture zone in the basalt plateau.