An understanding of how Earth's oceans were formed must begin with an examination of how our solar system developed. Scientists believe our solar system began forming as a huge cloud of dust that collapsed to form a sun surrounded by a flat disk of particles rotating around it, This disk-th...
今天阅读三篇文章是:Habitat Selection by Birds (鸟类的栖息地选择),Transportation and American Development (交通和美国的发展),和How Earth’s Oceans Formed (地球海洋如何形成)。 托福阅读第1篇话题重复2014.05.17 Habitat Selection和2013.03.30 Habitat Selection of Animals;第2篇话题重复2016.08.27 Impact of...
之后呢,理所当然地讨论交通发展带来的一系好处,使各地的联系更加紧密,促进经济的发展和城市的扩张。 3.How Earth’s Oceans Formed 根据标题小伙伴们就知道文章会讨论地球上的海洋是如何形成的。那作者的展开逻辑呢,首先是说明地球形成了,这是海洋形成基础呀。之后呢,介绍关...
The reading suggests agnostids may have been predators, akin to other primitive arthropods, hunting smaller organisms in the ancient oceans. It proposes their small size did not prevent them from preying on even smaller sea life. In contrast, the lecture points out a significant flaw in this th...
Well, there are a few theories—uh, one of them is that this has to do with the fact that Venus has no surface water that's needed to kinda lubricate the movement of the plates. You know, like oceans on Earth?Yeah, I forgot to spell that out, uh,Venus has no surface water......
In 1912, the German geologist Alfred Wegener proposed that Earth’s continents are mobile rafts of lighter crust that have shifted over time by plowing their way through the denser crust of the oceans.The theory, called continental drift, was partly motivated by the apparent fit, like puzzle pi...
Saturn's rings are much younger than the planet itself.They may have formed only a few hundred million years ago—around the time the earliest dinosaurs lived on Earth. We realize now that the ring particles, which, uh, range in size from microscopic dust to boulders bigger than large ...
equator; they hadn't yet moved to where they are today.So, what happened was, perhaps a slight cooling of…the very slight and temporary cooling of the sun-which still happens from time to time-and the earth starts to cool, the ice starts to spread on the oceans…starting at the ...