problema 3pumiliWhy does ice float on water?Ice is heavier than waterIce is denser than waterIce is less dense than water
problema 8pumili먼지가 해가 진 후에도 완전히 어두워지지 않는 이유는 무엇인가요?먼지가 태양의 빛을 흡수한다먼지가 태양의 빛을 모든 방향으로 확산시킨다먼지가 빛을 차단한다
problema 11pumiliWhat was the main challenge Joe and Simon faced while descending the mountain?AvalancheSnow stormWild animals
problema 12pumiliWhat unfortunate event happened to Joe while descending the ice cliffs?He got lostHe broke his legHe ran out of supplies