搜索结果: 1-1 共查到“air to form”相关记录1条 . 查询时间(0.062 秒)
Fossils may need air to form（图）
Fossils air to form
2019/11/15
Some of the world's most exquisite fossil beds were formed millions of years ago during time periods when Earth's oceans were largely without oxygen.That association led paleontologists to believe tha...