Oxygen is necessary for the evolution of complex forms of life, What organisms were responsible for changing the carbon cycle by producing oxygen. What was a (likely) major negative consequence of that? Lastly, what is the geological evidence that large quantities of oxygen were produced billions of years ago?

Q: If a sixth extinction event is occurring, how is it similar or different from the previous five mass…

A: Various mass extinction events that occurred in the history of the earth are- Ordovician-Silurian…

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Q: Which of the following was the least likely objective of the Urey-Miller experiment? Group of answer…

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Q: In the 1950s, scientists Miller and Urey conducted a classic experiment in which water, methane,…

A: Evolution is the study of origin of earth, origin of life on earth and relationship between…

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Q: 1. Label the Last Universal Common Ancestor on this tree. 2. Where on this tree would you find…

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Q: In Oct 2022, a chilling discovery was made in Vuvatu, a country known for its extensive volcanic…

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A: The primitive earth was in the form of a red hot, solidified cloud containing free atoms. The…

Q: According to this image of the carbon cycle, from your OpenStax textbook, which of the following…

A: Option 1 is the answer. Photosynthesis removes carbon from atmosphere in the form of  carbondioxide.

Q: Simple systems (of this type) of RNA , enzymes, and coenzymes have been created in the laboratory.…

A: Chemical evolution refers to changes in entities that do not have to be able to reproduce…

Q: How can we use the structures that are involved with photosynthesis and cellular respiration to…

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Q: Select only the true statements ahead: Fungi were the first eukaryotes to inhabit the earth and,…

A: 1. The statement about fungi and evolution is true. 2. The statement is true.

Q: How could the biological carbon cycle have worked on the primitive Earth, where oxygen gas was…

A: Introduction : The balance of the nutrients in the biosphere makes life sustainable. The movement of…

Q: Is your answer supported by the information from the article “Can Evolution outrace Climate Change”?…

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Q: have seen that energy is essential for life on earth. All organisms need energy to maintain their…

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Q: Determine whether each of the following traits are the result of convergent evolution?

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Q: how endosymbiosis, and the evolution of mitochondria, was a critical factor in affecting cell size…

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Q: Question #1: Please describe the specific enzymes that you are familiar with that are involved in…

A: " Since you have asked a multiple question , we will solve the first question for you. If you want…

Q: - How much time does it take for 1 half-life to occur?   -Approximately how many half-lives are…

A: Carbon is the element that is most commonly found in organic molecules. All organisms have a carbon…

Q: During the Early _______________, life consisted of prokaryotic cells, but by the end of this…

A: The major evolution evens since the origin of the earth have been categorized into three major eras.

Q: Why are scientists interested in the primordial synthesis of organic molecules when it comes to the…

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A: An animal varieties or species is regularly characterized as the biggest gathering of organisms…

Q: 29) The Cretaceous extinction. which was the most recent mass extinction, occurred about 65.5…

A: Natural selection, or evolution, is the process by which a species' features evolve over a number of…

Q: Question 18 What is shown in this illustration? -bil stongly curved . ibis bill elongated - bill…

A: Classifying a wide range of organisms on the basis of morphological similarity or close…

Q: Assume a flat Friedmann-Robertson-Walker universe, dominated by a fluid with equation of state P = ²…

A: In a flat Friedmann-Robertson-Walker (FRW) universe dominated by a fluid with an equation of state…

Q: Why is carbon essential to all known life in earth ?

A: Most living things on Earth are made of carbon . Living things need carbon the most in order to…

Q: Emergent complexity, and hence biological evolution, arises due to a combination of many factors:…

A: entropy can be a direct measure of complexity, where the smaller value of entropy indicates lower…

Q: elect the statement that does NOT support the origin of excavates that lack plastids, have highly…

A: Excavata belongs to the category of eukaryotes that are photosynthetic, unicellular, heterotrophic…

Q: Genetic Code Central Dogma processes Similar to life on Earth? No Yes

A: The evidence available about the creature shows characteristics that are radically different from…

Q: A. What is the PROTEROZOIC LIFE? B. Discuss the Great Oxygenation Event. C. Discuss the CAMBRIAN…

A: Geological time scale is a evolutionary event  which determines how the life appear , its…

Q: "Given that this organism was never detected in the fossil record, it must be extraterrestrial."

A: The statement "Given that this organism was never detected in the fossil record, it must be…

Q: Approximately how long ago did homo sapen (humans) first  appear on Earth 2,000 years ago 5-7…

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Q: There are many kinds of photosynthetic, chloroplast-containing eukaryotic organisms living in fresh…

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Q: Imagine you are the head of a newly formed NASA Interplanetary Paleontology Department! Based on…

A: Fossils are the impressions of the preserved impressions of organisms that remained on this planet…

Q: D Question 4 Which mass extinction led to the disappearance of the dinosaurs? O Triassic O…

A: The recurrent rise and disintegration of ice sheets and glaciers driven by the Milankovitch cycles,…

Q: The evolution of eukaryotes was most directly enabled by which of the following? a. Diversification…

A: According to guidelines we have to answer the first question only. so please kindly post the…

Q: How did the evolutionary expansion of eukaryotic organisms change the way carbon is cycled through…

A: Eukaryotic organisms: Eukaryotic organisms are the organisms that belong to the class Eukaryota or…

Q: . You are discussing the choice of the "oil-eating" bacteria that you will use to clean the affected…

A: Introduction Every year, millions of birds, animals, and fish die as a result of oil spills. The…