带羽毛的恐龙化石说明了什么？
What do feathered dinosaur fossils tell us?
中国辽西等地发现的带羽恐龙证明羽毛先用于保温或展示，后来才用于飞行，鸟类由恐龙演化而来。
Feathered dinosaurs from Liaoning show feathers first served warmth or display, then flight, confirming birds evolved from dinosaurs.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Wicander & Monroe,《Historical Geology》Cengage 多版
R. Wicander and J. S. Monroe, Historical Geology, Cengage Learning, various editions
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL79786W：Historical geology（按标题+作者
#带羽恐龙 #鸟类起源
琥珀里为什么常常有小虫子？
Why do pieces of amber often contain small insects?
远古树木流出的树脂把路过的小虫粘住包住，千万年石化成琥珀，虫子就被原样保存了下来。
Sticky tree resin trapped passing insects and hardened into amber over millions of years, preserving them perfectly inside.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Wicander & Monroe,《Historical Geology》Cengage 多版
R. Wicander and J. S. Monroe, Historical Geology, Cengage Learning, various editions
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL79786W：Historical geology（按标题+作者
#琥珀 #化石
化石是怎么变成石头的？
How does a fossil turn to stone?
生物死后被泥沙迅速掩埋，硬体里的矿物被地下水慢慢替换成石头，形状和纹路却保留了下来。
After a creature is buried in sediment, groundwater slowly replaces its minerals with rock, keeping the shape and detail.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Wicander & Monroe,《Historical Geology》Cengage 多版
R. Wicander and J. S. Monroe, Historical Geology, Cengage Learning, various editions
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL79786W：Historical geology（按标题+作者
#化石 #石化