How do scientists estimate the age of language?根据您输入的内容,为您匹配到题目: **How do scientists estimate the age of language?** A. By studying animals’ evolution. B. By studying human genes. C. By using mathematical tools. D. By using the age of living species. **答案**: C *...
science has finally given a definitive answer. The first accurate estimates of the age of the Earth came fromradiometric dating, which was discovered in the 20th century. This method uses the decay rate of radioactive elements in dating rocks and minerals. Scientists date the age of meteorites ...
Based on the analysis of these samples, scientists estimate that the Earth itself is about 4.5 billion years old. In addition, the oldest known moon rocks are 4.5 billion years old. Since the moon and the Earth probably formed at the same time, this supports the current idea of the Earth...
Scientists think that theEarth is 4.54 billion years old. Coincidentally, this is the same age as the rest of the planets in the Solar System, as well as the Sun. Of course, it’s not a coincidence; the Sun and the planets all formed together from a diffuse cloud of hydrogen billions ...
Astronomers(天文学家), comparing the earth to the sun and some stars, estimate that the earth is 4 to 5 billion years old. T oday,most scientists accept this estimate.1. T he age of the earth must be measured inA. hundreds of yearsB. thousands of yearsC. billions of yearsD. months...
Scientists study the ocean in many different ways. Although many marine(海洋的) scientists focus on animals in the ocean others seek to gain a better understanding of the ocean’s chemical and physical components (组成部分). Scientists are learning a great deal about the natural and human-caused...
proposed a model of the solar system that involved the Earth revolving around the sun, according toNASA.The model wasn't completely correct, as astronomers of the time struggled with the backwards pathMarssometimes took, but it eventually changed the way many scientists viewed the solar system. ...
proposed a model of the solar system that involved the Earth revolving around the sun, according toNASA.The model wasn't completely correct, as astronomers of the time struggled with the backwards pathMarssometimes took, but it eventually changed the way many scientists viewed the solar system. ...
, but the technique can work for estimating other shellfish as well. Oysters are the most difficult to identify with because the shells are smooth, with difficult to discern ridges. In this case, scientists must use chemical analysis of the minerals in the shells to try to estimate age....
Steve Connor