LUCENA CITY—Taal Volcano in Batangas had seven volcanic earthquakes and a prolonged tremor over the past 24 hours, the Philippine Institute of Volcanology and Seismology (Phivolcs) reported Sunday morning. The volcano, however, remains under Alert Level 1 (low level of volcanic unrest). Phivolcs noted that the volcanic tremor began at 7:10 p.m. on Saturday until the latest monitoring period. Despite the extended duration, Phivolcs clarified that…