Earth therefore needed a greenhouse effect to keep its surface warm enough and its water in a liquid state. This greenhouse effect appeared very early on in Earth's history, thanks to the water vapour and CO2 abundantly present in the atmosphere.因此，地球需要温室效应来使表面保持足够的温暖，并...
That created a small pond, and now we're looking at the dry sediments of that pond that record the history of earthquakes, and that tells us quite a great deal about the past behaviour of the San Andreas fault. => 这就造成了一个小池塘,现在我们正在看那个记录了地震历史的那个池塘的干燥沉...
The End of the Earth is famous only for the spectacular beaches and expansive ocean view, but also for a rich history, and its name brings profound poetic allusions. In the past, the phrase suggested an unattainable place. From the Song to Qing Dynasties, officials out-of-favor with the ...
One way to represent the evolution of tire is to compress the 4.6-billion-year history of Earth into a 1-year-long film. In such a film, Earth forms as the film begins on January 1, and through all of January and February it cools and is cratered (变成坑状) and the first oceans ...
地球日的由来 The History of Earth Day 世界地球日(Earth Day)即每年的4月22日,是一个专为世界环境保护而设立的节日,旨在提高民众对于现有环境问题的意识,并动员民众参与到环保运动中,通过绿色低碳生活,改善地球的整体环境。 Earth Day is the name given to two different annual observances that are intended ...
"The Chang'e-6 mission represents a significant milestone in the history of human lunar exploration, and it will contribute to a more comprehensive understanding of lunar evolution," said Yang Wei, a researcher at the Institute of Geology and Geophysics of the Chinese Academy of Sciences. ...
It attracted many alien invasion attempts throughout its multi-billion year history. Indeed, it owed its very existence to a species that hadn't originated there. Its core was formed around either a Racnoss webstar (TV: The Runaway Bride [+]) or a Time Lord containment shell (PROSE: Int...
water and soil conservation, rehabilitation of farmland, grassland, rivers and lakes, and protection of endangered wildlife and water resources. In June this year, China unveiled a 15-year comprehensive plan for ecosystem ...
This year marks the 50th anniversary of Earth Day. A half-century ago, activists (1)___(walk)to the street to speak out for the protection of the planet in (2)___(respond) to one of the worst oil spills (原油泄漏) in history. These activists inspired important changes in how our ...
E. Oxygen: a Four Billion Year History (Princeton Univ. Press, 2014). Holland, H. D. in Petrologic Studies: a Volume in Honor of A. F. Buddington (eds Engel, A. E. J., James, H. L. & Leonard, B. F.) 447–477 (Geological Society of America, 1962). Cloud, P. E. Jr. ...