petrifaction,petrification- the process of turning some plant material into stone by infiltration with water carrying mineral particles without changing the original shape 2.fossilisation- becoming inflexible or out of date fossilization passage,transition- the act of passing from one state or place ...
有小说、画集、游戏中的人物等等一琥珀为名 The amber is the number year ago resin is buried surely in underground, after passes through one kind of fossil resin which certain chemical change forms, is one kind of organic mineraloid.Amber shape many and varied, the surface was often retaining ...
Amber is a fossil plant resin found in sediments and sedimentary rocks in many parts of the world. It is hard, brittle, translucent to transparent, and is often cut as a gemstone. It has the appearance of a mineral, but lacks an ordered internal structure and lacks a definite chemical co...
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What is a fossil? Simply put, a fossil is the remains or evidence of any creature that once lived on the Earth.
The second major challenge in the recycled board production are the demanding wet end conditions at a board machine. The mills often operate with largely closed water loops, recirculating and reusing the process water. As a result, the colloidal and mineral contaminants that come from recycled fibe...
What is a mineral, and what is the study of minerals called? Chemical Compound: The substance that is formed with the help of two or more than two chemical elements in a certain proportion is known as the chemical compound. For example, water is formed with the help of hydrogen and ...
The fossil record represents a very small sample of the organisms that were once present on the planet. Most living organisms fail to fossilize. In order for fossilization to occur, after an organism dies, it must be covered by sediment and turned into a mineral. Water is required...
mineral /'mInorel/ n. 矿物2. fossil /fosl/ n.化石 相关知识点: 试题来源: 解析 文章大意:文章讲述了莉斯和家人每周都去自然历史博物馆,里面可以看到很多动物、植物、矿物、岩石和化石。 A. 1.T由第五句可知莉斯和家人每个周末都会去博物馆。 2.T由第六句可知英国有很多不同类型的博物馆。 3.F...
Wind power is a kind of ___. A. fossil fuel B. nuclear energy C. renewable energy D. mineral resource 相关知识点: 试题来源: 解析 C。本题考查能源类型。风能是一种可再生能源。A 化石燃料是不可再生的;B 核能不是风能;D 矿产资源与风能不同。反馈...