Imagine an ancient sunlit estuary rich in clay deposits. Countless aggregations of organic molecules stick to the clay. Which probable stage of physical and chemical evolution of life is that?
Q: When considering the entire period of time during which life on Earth has been evolving, we must…
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Q: In which probable stage of physical and chemical evolution of life were gaseous oxygen and water…
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Q: Which of the following would be the most likely place that life would first form on Earth?
A: Which of the following would be the most likely place that life would first form on Earth? Answer.…
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A: Evolution is the process of slow gradual change over a period of time. The process of evolution…
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A: Introduction carbon is the building blocks life on earth.
Q: How might radiometric dating provide support for the theory of evolution by natural selection?
A: Hi! As you have posted multiple questions, I will be answering the first question for you. If you…
Q: In the 1950s, scientists Miller and Urey conducted a classic experiment in which water, methane,…
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A: The earth is one of the eight planets revolving around the sun. It is estimated that earth have been…
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Q: Question: Which of the following puts the events in the history of life in the correct order?
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Q: Four billion years ago, the Earth was a thin-crusted inferno. Which probable stage of physical and…
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Q: ich of the following questions about the origin of life on Earth is most scientifically testable? *…
A: Different theories have been put forward to explain the origin of life on earth. Some of those…
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Q: Why do scientists think that all forms of life on earthhave a common origin?
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Q: Match the forms of life below with the earliest (approximate) time that it existed. Note: the earth…
A:
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Q: What is the name of the evolution where carbon, oxygen, nitrogen were formed?
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Q: Agree or disagree: Evolution best explains the vast diversity of life here on earth”
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A:
Q: Based on the Origin of Life by John H. McClendon, which of theories is most plausible
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- Four billion years ago, the Earth was a thin-crusted inferno. Which probable stage of physical and chemical evolution of life is that?During the first 600 million years of Earth history, enzymes, ATP , and other molecules could have assembled spontaneously at the same locations. Which probable stage of physical and chemical evolution of life is that?Why was it believed that life began in the seas and not in land or air? * Land and air were inhospitable places for life during the Hadean Eon. Land and air were inhospitable places for life during the Archean Eon. Land and air were inhospitable places for life during the Phanerozoic Eon. Land and air were inhospitable places for life during the Proterozoic Eon.
- Arrange these events in order of occurrence, with 1 being the earliest and 6 the most recent. First protocell form Origin of mitochondria Origin of chloroplasts First animals appear Earth's first sea form Precambrian ends A noltesupDirect evidence of life on early Earth comes from fossils of microorganisms that lived 3.5 billion years ago. But how did the first living cells appear?1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 29 27 28 30 330 29 29 30 Based on the given figure, answer the following questions (Note: BYA=Billion Years ago; MYA= Million years ago) The oldest eukaryote might be dated back to? Each day represents how many years? When did the first prokaryotic fossil exist? When did photosynthesis first emerged? The multicellular organisms appeared? ~1.5 BYA ~2.5 BYA ~10 BYA ~3.5 BYA ~150 MY ~50 MY ~1 MY ~4.5 MYA ~ 10 MYA ~1 BYA
- Below are some key events that took place during the long history of life on Earth. Arrange them in the correct sequence: First land plants (kingdom Plantae) First eukaryotic life (domain Eukarya) Adaptive radiation of mammals (class Mammalia) Evolution of chloroplasts Cambrian explosion First aerobic organisms (those that utilize cellular respiration) First land vertebrates (tetrapods) First multicellular organisms First living cellsThe theory of evolution is supported by a large body of evidence. What is the first occurrence of found in geologic strata?Most likely the proto-cells were little more than membrane sacs protecting information-storing template and various metabolic agents from the environment. Which probable stage of physical and chemical evolution of life is that?
- Arrange these events in order of occurrence, with 1 being the earliest and 6 the most recent: ___1 a. Earths first seas form ___2 b. origin of mitochondria ___3 c. first protocells form ___4 d. Precambrian ends ___5 e. origin of chloroplasts ___6 f. first animals appearUsing radioactive isotopes to determine the age of a fossil is known as radiometric dating. How might radiometric dating provide support for the theory of evolution by natural selection? Hint—Consider the age of fossils with respect to the overall fossil record (the entire collection of data regarding fossils and the age of Earth). “Navy coffee” is where the coffee is brewed strong and a bit of salt is added. What is special about water that allows you to put sugar or salt in your coffee? To help answer this question, consider the opposite situation: Why do salt scrubs that you buy in a high-end spa consist of large salt crystals in oil?We live in the Cenozoic era, and scientists know more about this era and the epochs it’s divided into than any other time period. Why is this? A. We know more about the Cenozoic era because this is the only era that has had a wide diversity of species living on Earth. B. We know more about the Cenozoic era because this is the most recent time period in the history of the Earth, and we have more information available to study. C. We know more about the Cenozoic era because the planet’s poles reversed magnetic fields at the beginning of this era. D. We know more about the Cenozoic era because fossils don’t exist to document previous eras.