In which probable stage of physical and chemical evolution of life were gaseous oxygen and water also present?

Q: Once life began, what types of organisms lived on Earth forthe next two billion years? Where did…

A: Introduction There are several hypotheses presents on that how life starts on the primitive earth.…

Q: What experimentation has been done on finding the source or raw material for the first life on…

A: Harold Urey and Stanley Miller are two American scientists who attempted to create similar…

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: What is the implication of having oxygen-producing organisms evolve earlier than hypothesized?

A: Introduction  The process of change in heritable characteristics through successive generations is…

Q: What is the three-domain concept of the tree of life?How was the tree of life constructed?

A: The branch of science that deals with naming, describing, and classifying various organisms is known…

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: hat is Evolution of living things  ?

A: Evolution is a complex process by which the characteristics of living organisms change over many…

Q: What is the origin of life or the main ancestor of all organisms

A: Origin of life is still one of the most complex topics to be explained and it encompasses all the…

Q: Which of the following is the most likely organism to fossilize and be found in the fossil record?…

A: Step 1 Fossils are remains, tracks, impressions, or traces of organisms that existed in the past.…

Q: Why was the age of Earth important for Darwin’s ideas about evolution?

A: The Earth's age was important for Darwin to deduce the concept of evolution as evolution is a slow…

Q: What is the correct order of appearance in the fossil record, starting with the earliest: eukaryotic…

A: They consist of eubacteria and archaebacteria. Bacteria are simple prokaryotic organisms which are…

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: 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: Most likely the proto-cells were little more than membrane sacs protecting information-storing…

A: The evolution of the cell membranes plays a very important role in the adaptation of modern cellular…

Q: Before the emergence of life of what gases was the earth's primitive atmosphere constituted?

A: the primitive atmosphere was reducing in nature it had little or no oxygen  it was rich in water…

Q: The more DNA and protein sequences two organisms share, the ________________ closely related they…

A: Evolution is a theory which represents the development of new organisms from pre-existing forms and…

Q: Where on the tree did lungs (or lung derivatives) evolve? Group of answer choices D C A E B

A: Phylogenetic tree of chordates is given in the question. Phylogeny depicts the evolutionary…

Q: Present three possible explanations for the origin of life.

A: Our earth is full of animate and inanimate matters. This matter undergoes changes from time to time,…

Q: How is origin of life attributed to LIGHT and WATER? Give a detailed explanation.

A: The origin of life is still a mystery and not proved. There are many theories that are suggested by…

Q: Four billion years ago, the Earth was a thin-crusted inferno. Which probable stage of physical and…

A: Solar system was originated around 4.6 billion years ago from contraction of rotating gas and dust…

Q: Identify the stages of the origin of life hypothesis.

A: BASIC INFORMATION EVOLUTION The theory of evolution was first given by the Jean Baptist de Lamark.…

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: How can the variability of life in both time and space be described?

A: Ecosystem balance, often known as "ecosystem homeostasis," is influenced by both factors that tend…

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: How do organisms evolve? Explain clear

A: Evolution is the process by which the traits of a species evolve over numerous generations through…

Q: what is the difference between evolution and acclimation and how do they work with climate change?

A: Acclimation and evolution are the beneficial changes takes places in the organism . It allows…

Q: What does Oparin – haldane hypothesis about origin of life suggests.

A: The Oparin-Haldane theory of the origin was discovered by two scientists Aleksandr I. Oparin and J.…

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: Below are some key events that took place during the long history of life on Earth. Arrange them in…

A: Constant change has characterized earth since its beginning some 4.5 billion years ago. life…

Q: Match the forms of life below with the earliest (approximate) time that it existed. Note: the earth…

A:

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: Why is it important for organisms to adjust the timing of their life history to seasonal changes in…

A: Seasonality is a fundamentally significant part of natural fluctuation, and firmly shapes all parts…

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 is Molecular Similarities of All Life-Forms?

A: The study of living things is called biology. Their morphology, physiology, anatomy, behavior,…

Q: how would you explain the relationship of life perpetuation to the evolution of life

A: Evolution in biology is described as the process by which all the living organisms living today have…

Q: What is the name of the evolution where carbon, oxygen, nitrogen were formed?

A: Carbon, nitrogen and oxygen They are the three main basic components of life. Life is impossible…

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: how organisms evolved through time. What are pressures that caused the evolution of these organisms…

A: Evolution is the biological changes that occur in a population over a period of time.

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: Place the following events in the order in which they are thought to have occurred in early…

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

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 is first domain organism in earth?

A: In this question, we have to answer the first domain organism of earth.

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: