How Did Life on Earth Get Started? (cover story)The article discusses how scientists are aiming to find a natural explanation of how life began on earth. Biologists, astronomers and geologists are trying to re-create life using varied angles. The author explains that scientists feel life began...
How did life on Earth begin? Maybe it began with a lightning strike (一道闪电). According to a new study by Yale University, lightning strikes during Earth’s early history helped make phosphorus (磷). It is important for life. Phosphorus not only helps make DNA and RNA, but also gives...
How did life on Earth begin and evolve?The many different species of living things on Earth (and many species that are now extinct) evolved from very simple living things.Life on Earth began about 3500 million years ago.Evidence for evolution is provided by fossils and from analysis of ...
2.How did lightning create more phosphorus on Earth? A.It changed rocks into water.B.It brought phosphorus from space to Earth. C.It hit rocks with phosphorus inside.D.It created rocks that had phosphorus inside them. 3.What might scientists believe, according to Paragraph 4?
When did Earth Day first begin? Earth Day is a concept first brought about by Gaylord Nelson, a politician and environmentalist who served as a senator and governor in theUnited States. The senator had many concerns about the damaged environment in the US, including the large oil spill...
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How on earth did you find a place like that? M: I just found it online. W: Great! Text 10 M: Hello, I’m Jeff Anderson from Coventry, England. And in today’s program, I’d like to share with you a special kind of English culture — the football. A lot of people in England...
How did the atmosphere form around the Earth? About 4.1 billion years ago the planet began to settle down. It was then that time earth locked into an orbit around thesun. From here the surface began to cool down slightly. It was around this time that the first atmosphere started to take...
even if the microspheres did not hold any genetic system. Contrasted with that, many other microspheres, which were defeated in the struggle for existence, disappeared, leaving many inactive bodies, for example, in the depressions of rocks on primitive Earth. However, those inactive bodies were re...