नॉर्मन मायर्स द्वारा विश्व में जैव विविधता के अब तक कितने हॉटस्पॉट (तप्त स्थल) पहचाने गए हैं?

Norman Myers originally defined 25 biodiversity hot spots, which later expanded to 34 globally recognized hot spots. Thus, option (3) or (4) depending on the initial definition; originally 25 were identified.