人类大约在250万年前首次出现。人类是进化阶段的相对新人。大约700万年前,人类与黑猩猩分道扬..大约250万年前,人类进化的第一个成员,Homo habilis。我们的物种,智人(Homo sapiens)在大约50万年前进化。化石是生活在遥远过去的生物的遗骸。对于被认为是化石的标本,它必须具有规定的最小年龄(通常指定为大于10,000年)。所有化石 – 在被发现的岩石和沉积物的背景下考虑 – 形成了所谓的化石记录。化石记录为理解地球上生命的演变奠定了基础。化石记录提供了原始数据 – 证据 – 使我们能够描述过去的生物。科学家利用化石记录构建理论,描述现在和过去的生物是如何进化并相互联系的。但是这些理论是人类的结构,它们是提出描述遥远过去发生的事情的叙述,它们必须符合化石证据。如果发现一种不符合当前科学认识的化石,科学家们必须重新思考他们对化石及其血统的解释。正如科学作家亨利·吉所说的那样:“当人们发现化石时,他们对化石可以告诉我们关于进化,过去生活的东西抱有很大的期望。但化石实际上并没有告诉我们什么。它们完全是静音的。化石是一种惊叹,说:我在这里。处理它。僵化现象在生命史上是罕见的。大多数动物死亡,没有任何痕迹;他们的遗体在他们死后很快被清除或者很快就会分解。但偶尔会在特殊情况下保留动物的遗骸,并产生化石。由于水生环境提供的石化环境比陆地环境更有利,大多数化石都保存在淡水或海洋沉积物中。化石需要地质背景,以告诉我们有关进化的宝贵信息。如果化石被从地质背景中取出,如果我们拥有一些史前生物的保存遗骸,但不知道它被驱逐出的岩石,我们可以说对该化石的价值很小。

美国加州大学论文Essay代写:人类与黑猩猩

Humans first appeared about 2.5 million years ago. Human beings are relatively new people in the evolutionary stage. About 7 million years ago, humans and chimpanzees parted ways. About 2.5 million years ago, the first member of human evolution, Homo habilis. Our species, Homo sapiens, evolved about 500,000 years ago. Fossils are the remains of living creatures living in the distant past. For specimens considered to be fossils, it must have a specified minimum age (usually designated for more than 10,000 years). All fossils – considered in the context of the discovered rocks and sediments – form a so-called fossil record. Fossil records lay the foundation for understanding the evolution of life on Earth. The fossil record provides raw data – evidence – enabling us to describe past creatures. Scientists use fossil record construction theory to describe how current and past creatures evolve and relate to each other. But these theories are human structures. They are narratives that describe what happened in the distant past. They must conform to fossil evidence. If you find a fossil that does not meet current scientific understanding, scientists must rethink their interpretation of fossils and their lineage. As the scientific writer Henry Kyrgyz said: “When people discover fossils, they can tell us about fossils, things that have lived in the past, but the fossils actually don’t tell us anything. They are completely It is muted. The fossil is a kind of exclamation, saying: I am here. Deal with it.” ~ Henry Ji. Fossilization is rare in the history of life. Most animals die without any traces; their bodies are cleared soon after they die or will soon break down. Occasionally, animal remains are preserved under special circumstances and fossils are produced. Since the petrochemical environment provided by the aquatic environment is more favorable than the terrestrial environment, most fossils are preserved in freshwater or marine sediments. Fossils require a geological background to tell us valuable information about evolution. If fossils are taken out of the geological setting, if we have some preserved remains of prehistoric creatures, but we don’t know the rocks from which they were expelled, we can say that the fossils are of little value.

发表评论

电子邮件地址不会被公开。 必填项已用*标注