百度试题 结果1 题目Fossils are the evidence of past life___in the rocks of the Earths crust. A. revealed B. preserved C. reserved D. postponed 相关知识点: 试题来源: 解析 B这是一道词汇题,考点是意思相近的动词过去分词意思的辨析。反馈 收藏 ...
What were billed as the oldest fossils on Earth may just be some rocks, according to a new study. Two years ago, a team of Australian scientists found odd structures in Greenland that they said were partly leftovers from microbes that lived on an ancient seafloor. They were said to be 3....
Why are silicate minerals typically not considered to be ores? Why don't sediments accumulate everywhere? How does cooling rate affect the crystal size of minerals in igneous rocks? Why is petrology important? Why are fossils important?
Are fossils only found in sedimentary rocks?Titamgim, R Dirk
In an area where the rocks are arranged in layers and often contain fossils, what type of rocks are these? A. Igneous rock B. Sedimentary rock C. Metamorphic rock 相关知识点: 试题来源: 解析 B。解析:沉积岩具有层理构造,并且经常包含化石。这是因为沉积岩是由沉积物一层一层堆积形成的,在这个...
aWish you live more and more young 愿望您活越来越年轻人 [translate] a7. How can you prove that the fossils are actually as old as the rocks? 正在翻译,请等待... [translate] 英语翻译 日语翻译 韩语翻译 德语翻译 法语翻译 俄语翻译 阿拉伯语翻译 西班牙语翻译 葡萄牙语翻译 意大利语翻译 荷兰语...
Brachiopods have a very long history of life on Earth; at least 550 million years. They first appear as fossils in rocks of earliest Cambrian age and their
about the ancient history of the earth.Mary and her fathe r collected fossils (化石) in the ir village on the south coast of Great Britain.Fossils are parts of plants or animals that have been saved in rocks for millions of years. When she was only twelve years old,Mary became the ...
Wrinkly textures in rocks that formed from ancient biofilms living in marine sediments are considered trace fossils. a. True. b. False.Which of the following rock types can be turned into a metamorphic rock? a. Sedimentary b. Igneous c. Met...
The word fossil comes from the Latin term fossilis, meaning "dug up." Fossils are formed when an organism is buried by water containing debris and minerals, and through the effects of wind or gravity. Most fossils are found in sedimentary rocks. Fossils can also be found in metamorphic rock...