How do we know when oceans were first present on Earth?Why is the presence of oceans significant to the origins anddiversification of life?

Q: What is the evolutionary history of life on Earth, and what are the major events and adaptations…

A: The history of life on Earth is a vast and complex subject that spans billions of years. Scientists…

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: Hundreds of millions of years ago, Earth’s landmasses were joinedinto one supercontinent, Pangaea.…

A: Hundreds of million years ago, the Earth landmass appeared as one supercontinent known as pangaea.…

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: Do Organisms Live Deep in the Regolith?

A: The fresh rock on the earth's surface is continuously exposed to physical and…

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.…

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: How did life first begin on Earth?

A: The Earth was created about 4.5 billion years ago. Scientists and researchers believe that the…

Q: How does Biogenetic theory explain the origin of life?

A: The biogenetic theory is a scientific theory that seeks to explain the origin of life. According to…

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: 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: Describe how the sudden appearance of oxygen in the atmosphere about 2.5 billion years ago…

A: Since life first emerged on Earth between 3.5 and 4 billion years ago, it has continued to develop.…

Q: How did the origin of photosynthesis affect subsequentevolution of life on Earth?

A: Evolution is a series of events through which new biological species develop over time from…

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 does the fact that Earth is a sphere tilted on its axis influence thedistribution of life?

A: Earth is so far the only planet that has the capability to sustain life on it. There are many…

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: Name the study of possible life outside the earth.

A: Our universe is made up of millions of galaxies within which contain within itself billions of stars…

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

A: Evolution is a very slow process compared to the speed of climate change. It is unlikely that…

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: How did scientist think the first life may have evolved on earth?

A: Evolution is the change in the characteristics of a species over several generations and it relies…

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 evidence would you look for on Enceladus, Europa or Mars that would tell you that life may have…

A: Europa is the smallest of four Galilean moons orbiting Jupiter. Enceladus is the sixth-largest moon…

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: Describe the conditions that scientists think existed on early Earth.

A: Introduction  The origin of life on earth can be traced back to 3.4 billion years ago and as we now…

Q: Why do scientists think that all forms of life on earthhave a common origin?

A: Primitive atmosphere was reducing rich in Hydrogen (H2) and free molecular oxygen (O2) was absent,…

Q: Geological time covers huge spans, up to billions of years. Yet humans rarely live for more than 100…

A: Geological time scale is important to understand the history of earth that how several natural…

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: How have the earth and life on it evolved together with each deeply influencing the other?

A: The different varieties of animals, microorganisms, and plants are present on earth. All the…

Q: What's the earth crust?

A: Earth is a planet that is made up of the lithosphere, hydrosphere, and atmosphere. All of these…

Q: Why does there appear to have been only one origin of life on earth? Why are there not multiple…

A: Evolution is the process by which different species of living organisms develop and change over…

Q: Why do biologists construct ‘a tree of life’?

A: The “tree of life” is basically a metaphor used to designate the evolutionary tree or diagram of the…

Q: Historically, how has the origin of life on earth been explained?

A: Introduction The mythological explanation for the phenomenon of life on Earth is the most frequently…

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: According to natural selection, which organisms are most likely to survive?

A: Evolution is the process by which  complex organisms develop from simple ones .

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: What do we mean when we write “all life in Earth is fundamentally the same”? A shark and a seaweed…

A: Living organisms are well arranged, which means that they are specialized. All living organisms…

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…

Marine Evolution

Marine habitat is less explored, and hence, its biological diversity is far less known. The marine habitats are not constant due to their shifting nature, while the terrestrial habitats are more stable. Marine biology is the science that deals with the study of diverse marine species, their interactions, and behavioral characteristics.