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preserved remains or traces of organisms found in rocks or sediments, providing valuable evidence of past life forms and evolutionary history on Earth 开始学习
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layers of rock or other materials. 开始学习
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period of time during which human activities have impacted the environment enough to constitute a distinct geological change. 开始学习
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something very important that something else depends on 开始学习
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amount of water transferred into a place 开始学习
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the degree of being saline 开始学习
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an animal that eats only plants 开始学习
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the fact of something increasing a lot and suddenly in number or amount 开始学习
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a state in which opposing forces or influences are balanced. 开始学习
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ocated below the surface of the water 开始学习
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a very light and porous volcanic rock formed when a gas-rich froth of glassy lava solidifies rapidly 开始学习
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the process of ice, snow, or another frozen substance becoming liquid or soft as a result of warming up. 开始学习
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growing or spreading quickly, in a way that cannot be controlled. 开始学习
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the level at which something starts to happen 开始学习
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mark with intersecting lines, overlap 开始学习
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to make less severe, less harsh 开始学习
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to increase the chance of something happening 开始学习
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Up the possibility of something
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connected with the ability to smell 开始学习
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to make something new from different things 开始学习
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uels, such as gas, coal, and oil, that were formed underground from plant and animal remains millions of years ago 开始学习
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all those economic activities, products and services designed to meet the needs of people over 50 开始学习
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A glacier is a large mass of ice that forms over many years from the accumulation and compaction of snow in areas where the rate of snowfall exceeds melting. 开始学习
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refer to the lasting effects or consequences of a particular action, decision, event, or trend over an extended period. 开始学习
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happening after something else 开始学习
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happening after something else
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If an amount quadruples, it becomes multiplied by four, or if you quadruple it, you multiply it by four. 开始学习
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to make something less severe or less unpleasant 开始学习
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to become gradually smaller or weaker, or happen less often 开始学习
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to make a judgment about a situation or about what someone thinks or feels, to measure a distance, size, or amount 开始学习
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the state of being full or blocked, especially with traffic 开始学习
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a large structure on or in water with facilities to drill wells, to extract and process oil and natural gas 开始学习
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an individual animal, plant, piece of a mineral, etc. used as an example of its species or type for scientific study or display 开始学习
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the existence of a large number of different kinds of animals and plants which make a balanced environment. 开始学习
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a small area of land that has a wall or fence around it 开始学习
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enough or more than enough 开始学习
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to grow or develop successfully 开始学习
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furthest towards the north of an area 开始学习
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the quality or state of being prepared to do something; readiness 开始学习
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to appear by coming out of something or out from behind something 开始学习
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to reach the same standard, stage, or level that someone has reached 开始学习
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a position or standpoint from which something is viewed or considered 开始学习
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the act or an instance of placing two or more things side by side often to compare or contrast or to create an interesting effect 开始学习
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it’s a type of transport that is transporting a big amount of people – transport zbiorowy 开始学习
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it's a car without a driver 开始学习
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to originate or take part in the development of a new method, area of knowledge, or activity 开始学习
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no longer in existence; having ended or died out 开始学习
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the top or highest part of something such as a wave or a hill 开始学习
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the possible results of an action 开始学习
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to grow or develop successfully 开始学习
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