Four billion years ago, the Earth was a thin-crusted inferno. 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…

A: To understand the change in flora and fauna that have occurred over million of years on Earth ,we…

Q: In which probable stage of physical and chemical evolution of life were gaseous oxygen and water…

A: Earth was formed some 4.6 billion years ago from the sun due to the continuous bombardment of huge…

Q: What is the most logical theory on the topic of the Origin of Life?

A: In the 1920s, English scientist John Burdon Sanderson Haldane and Russian scientist Aleksandr Oparin…

Q: Which molecule is believed to have preceded the other two during the evolution of life? RNA…

A: Introduction :- When an environmental shift makes new resources available or poses new environmental…

Q: How does evolution lead to both the diversity and the unity of life

A: Unity of life is states that all living organisms share basic fundamental characteristics and they…

Q: What is a domain ? What are the three domains of life on Earth? Explain briefly.

A: Domain is the highest taxonomic rank in the hierarchical biological classification system, above the…

Q: What are the weaknesses of the origin of life theories?

A: At the turn of this century, spontaneous generation began to make a comeback as a scientific theory…

Q: Are the three methods/hypotheses of producing the building blocks of life on earth mutually…

A: Introduction carbon is the building blocks life on earth.

Q: How do biologists define life, and what were the origins of life?

A: This question is about and origin of life.

Q: Why is it difficult for scientists to place an old paradigm with a new paradigm?

A: Hi, since you have asked multiple questions, we will solve the first question for you. If you want…

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…

Q: 1.3 What are the pieces of evidence on the evolution of life which may have enabled the first forms…

A: Perhaps the most persuasive fossil evidence for evolution is the consistency of the sequence of…

Q: 1. For how long has there been life on Earth? 2. For what percentage of time has life existed on…

A: The geological time scale depicts the various time periods throughout the history of the earth…

Q: Which of the following events occurred first in eukaryotic evolution? a. Endosymbiosis and…

A: Answer is c.)  compartmentalization and formation of nucleus.

Q: During the first 600 million years of Earth history, enzymes, ATP , and other molecules could have…

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

Q: No one knows exactly when or how the first living organisms evolved, but we know that life existed…

A: Just as the universe is believed to have been formed due to the occurrence of the 'Big Bang', the…

Q: Without an oxygen-free atmosphere, the organic compounds that started the story of life never would…

A: The Earth has been significantly altered by life. Organisms have influenced the composition of the…

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…

Q: What theory explains that the earth was created by a supreme being? *       Gradualism No answer…

A: Earth is the third planet starting from the sun. It is the only astronomical object known to harbour…

Q: What was the composition of the earth’s atmosphere at the time of the origin of life, and how did it…

A: Earth was originally in the molten lava state mainly consists of hydrogen sulfide and other…

Q: What is the most accepted hypothesis on the origin of life on earth? How does it compare to the…

A: Introduction The heterotrophic hypothesis on the origin of life is the most compelling and widely…

Q: What theory of the origin of life do you think is most possible? Why?

A: There are so many theories of the origin of life is available. First of all, we will know about the…

Q: What is environmental evolution? How do all living things share a common ancestor? What is random…

A: Evolution is the process in which something grows and evolve into something else. This happens with…

Q: What is the origin of life or the main ancestor of all organisms?”, what would be your answer and…

A: Answer: As the question depicts that it is the topic of EVOLUTION.  EVOLUTION: this is the process…

Q: Based on the Origin of Life by John H. McClendon, what are the implications of each theories?

A: Origin of life by John H.McClendon It explains the Origin of the atmosphere ocean, and earth crust…

Q: What two pieces of evidence support the claim that all life on Earth descended from a common…

A: Evolution is the process by which the heritable traits of different organisms evolve over subsequent…

Q: 1. For how long has there been life on earth? 2. For what percentage of time has life existed on…

A: ​The geological time scale relates layers of rock (stratigraphy) and carbon dating to periods of…

Q: the landmark experiment by Miller and Urey, and various repeats of this experiment, did not…

A: Introduction: The mentioned experiment was carried out to understand the various ways in which the…

Q: With the above scenario in mind, discuss the significance (to life on earth) of the original…

A: The invention of oxygenic photosynthesis was a small step for bacterium, But a giant leap for…

Q: How does evolution work to create the diversity of life on Earth

A: The gradual development or change in organisms with accordance to the changing environment for their…

Q: How does genetics provide strong evidences of evolution of life?

A: Genetics is the field of biology that studies genes, genetic variation, and heredity in organisms,…

Q: Scientists Stanley Miller and Harold Urey set up an experiment modeling the environmental conditions…

A: Conclusion from stanley Miller and Harold urey experiment is:- Life assembled from chemical building…

Q: Which molecule -DNA or RNA- do scientist believe was found in the first life form on Earth? Why do…

A: DNA is the double helix structure. RNA is the signal helix structure.

Q: Based on the Origin of Life by John H. McClendon, how did life on earth start based on the different…

A: John H. McClendon published the Origin of Life in 1999. There he mentioned the origin of the…

Q: What are the differences between theory of creation and evolution? And why is evolution attracts so…

A: Evolution and the Creation theory have for quite some time been the subject for debate and basic…

Q: Imagine an ancient sunlit estuary rich in clay deposits. Countless aggregations of organic molecules…

A: Several hypotheses have been made in relation to life's origins on Earth. In 1936, Alexander Oparin…

Q: How have changes in earths systems contributed to the evolution of life?

A: Earth and its environment are persistently modified. Plate tectonics move the landmasses, raise…

Q: a) With the above scenario in mind, discuss the significance (to life on earth) of the original…

A: a) Photosynthesis is the process in which green plants utilize water and carbon dioxide to generate…

Q: Origin of Life List in a series of four or five steps the most likely scenario for the evolution of…

A: Evolution is a continuous process and we are still evolving. Evolution is nothing but adapting to…

Q: What evidence is there for the hypothesis that life originated on Earth by the creation and…

A: The origin of life on the earth is both an interesting and a difficult question to answer. We have a…

Q: Based on the Origin of Life by John H. McClendonn, which of his theories is the most plausible?

A: Introduction John H. McClendon's Book, Origin Of Life, Is A Informational Book On The Origins Of…

Q: Why is evolution important in explaining the diversity of life

A:

Q: Based on the Origin of Life by John H. McClendon, which of theories is most plausible

A: Origin of Life, by John H. McClendon, is an informational book about the origin of life on Earth. It…

Q: Relative to a human lifetime, is evolution a process too slow or too fast for us to see it easily?

A: Evolution is the gradual change of a species' traits over a period of time. Natural selection has a…

Q: Why does icee float? Why is this "weird." What "should" happen when the temperature decreases? Why/…

A: To determine: how Ice float What happens if temperature decrease How floating helps aquatic…

Q: How is Aristotle’s “scale of nature” idea linked to early evolutionary thought? In what ways does it…

A: Evolutionary theory of biology states that organisms undergo a change in successive generations over…

Q: what are the different perspectives of the Origin of Life?

A: Origin of life - The emergence of heritable self reproduction. It began with the origin of universe.…

Q: With the above scenario in mind, discuss the significance (to life on earth) of the original…

A: Photosynthetic bacteria are the group of bacteria that uses the photosynthesis process to generate…

Q: If living cells were produced in a test tube from nonbiological components by chemical processes,…

A: The first cells that appeared on the earth are believed to be prokaryotic heterotrophic and are…

Human Evolution

Human evolution is the process of evolution of humans from early man to anatomically modern humans. The process of evolution in humans leads to the gradual development of traits like bipedalism. Humans are the highly social animals that make them the most advanced animal on Earth.  Human evolution is an outcome of interaction among the following processes: