How do species evolve? 🐻➡️🐻‍❄️ Mechanisms at play for the subpopulation of polar bear in Southeast Greenland: 🏝️ The Founder Effect ☠️ Different factors needed for survival in each population (selection pressures) 🏞️ Geographic isolation Given enough time and sufficient differences in environment, the southern and northern bear populations might become separate species…. 😲 #science #polarbear #evolution | sciencewithspice

Christmas isn’t just for reindeer and robins. 🐾 Deep in the Arctic, tiny polar bear cubs are spending their first winter snuggled safely with mom. Born blind, nearly hairless, and weighing less than a pound, these cubs grow fast - learning to survive one of the harshest environments on Earth. Cute, cozy, and full of wonder, nature has its own holiday magic. 🎬 Watch Wild Christmas, now streaming on CuriosityStream 📷 Meril Darees / Polar Bears International - Thumbnail Image . . . #WildChristma