Hường nguyễn Minh Hường
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2026-06-16 09:18:09
Mammoths are magnificent, extinct prehistoric relatives of modern elephants that roamed the Earth during the Ice Age. With thick shaggy fur, fatty humps, and long curved tusks, these ancient herbivores perfectly adapted to the frigid northern tundras before ultimately vanishing around 4,000 years ago. The mammoth, a genus of ancient proboscideans (Mammuthus), once roamed the cold landscapes of Eurasia and North America. The most famous of these is the woolly mammoth (Mammuthus primigenius), which measured up to 3.5 meters tall at the shoulder. To survive the freezing Ice Age, these majestic creatures were exceptionally well-adapted. They possessed a dense undercoat and a coarse, dark brown outer covering that could reach lengths of 50 cm. Beneath this thick fur lay a significant layer of insulating fat, and some cave paintings even suggest they sported a fat-storing hump on their back to provide energy during harsh winters. Their iconic, spiraling tusks could grow up to 4.5 meters long and were used not only for fighting and displaying dominance but also for sweeping away thick snow to forage for grasses and shrubs. Behaviorally, mammoths were highly social, moving in family herds led by matriarchs and consuming massive amounts of vegetation daily. The exact reasons behind the extinction of the mammoth remain heavily debated, though it is widely believed to be a combination of natural climate warming and intense hunting by early humans. While mainland populations died out around 10,000 years ago, isolated dwarf populations on remote islands, such as Wrangel Island, survived until roughly 4,000 years ago. Today, these legendary giants are being extensively studied through frozen carcasses in the permafrost, offering a fascinating glimpse into prehistoric ecosystems.
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2026-06-16 09:14:06
Ngay xua hoi lop 1 co anh lop 5 dam vao toi do anh cu chay nhanh nhanh roi anh con da toi nga xuong vung nuoc,dung la nguoi vo dao duc
2026-06-11 11:43:51
Đã may quần áo hết số mét vải là:
35 * 4/7 = 20(m)
Còn lại số mét vải là:
35 - 20 = 15(m)
May được tất cả số cái túi như vậy là:
15 : 15/8=8(cái)
Đáp số: 8 cái túi.
2026-06-11 11:35:31
Nhà ông và nhà Nam có số con cá là:
24+25=49(con cá)
Đáp số:49 con cá.
2026-06-11 11:32:51
12+23=35
2026-06-11 11:18:10
Tập hợp \(B\) gồm các số tự nhiên lớn hơn 5 và nhỏ hơn 9, được viết bằng cách chỉ ra tính chất đặc trưng như sau: \(B = \{ x \in \mathbb{N} \mid 5 < x < 9 \}\) (Nếu viết bằng cách liệt kê phần tử, ta có: \(B = \{6; 7; 8\}\))