1How did life on Earth begin? Maybe it began with a lightning strike(—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 ene...
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...
While we now know how life works, we do not know how life started on Earth, and may never know for sure, even if we do succeed in creating life in the laboratory. The problem is that the historical trail may have been totally obliterated. We do know the window of time for the ...
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 ...
Earth Jupiter UranusNeptuneSaturn sun Whatothersubjectsofsciencedowelearn?mathematiciangeography Howdidlifebeginontheearth?theorigin/mysteryof lifeontheearth TestyourMemory!宇宙行星卫星太阳系天文学（家）物理（学家）化学（家）生物（学家）数学（家）地理（学家）地质（学家）科学（家/的）科学理论宗教（的...
Question: How did life begin on the earth? Para 5:ask students to read para. 5 and then answer the question (3m) Question 1. What were those clever animals with hands and feet? Question 2. What have “clever...
How did life begin on the earth?,There are different legends(传说) of how the universe and life began in different cultures:,In Chinese culture,_ separates(分) the sky from the earth.,Pangu 盘古,sky,earth,_ mended the heaven and created human beings.,Nuwa (女娲),In western countries: ...
6. How did life come into being on the earth?7. What problems are caused by human beings? What should we do?八、板书设计单词:atmosphere, solid, explode, oxygen, surface, spread, method, presence, force, float, mass, 短语:the solar system, prevent from, depend on, cheer up, now that...
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 en...
1.How did water come into being on the earth? 2. What is the significance of the presence of water on the earth? Conlidation(class work) Complete the passage according to the text The explosion of the earth produced___, which turned into water when the earth cooled down. Water allowed...