Why was it believed that life began in the seas and not in land or air?

Q: How can you know what happened millions of years ago if no one was there to see it  Explain

A: Every living creature on the planet has the potential to evolve into something. Cells adapt to…

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: How did discoveries in the deep sea influence scientists' ideas about whether life could be found…

A: A discussion of life elsewhere therefore naturally begins with a review of some key aspects of 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: 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 theory of the origin of life do you think is most possible? Why?

A: Earth's life began millions of years ago. There are numerous ideas about the origin of life,…

Q: What are the eons in which the following events occur? Origin of Earth. Oxygen appeared in the…

A: Eon is geologic time and it is such a long time that cannot measure. Firstly, the origin of the…

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

A: Raw materials  Raw material are the basic materials from which the things are made. Like raw…

Q: Was there molecular oxygen in the earth's primitive atmosphere? How has that molecule become…

A: Oxygen is one of the most important molecules or elements for all living organisms. It is…

Q: what can you say about the story of earth?

A: Evolution mainly  focus on living organism. Evolution means "descent with modification" ( Darwin,…

Q: Cuvier's idea of catastrophe related to asteroid collisions understanding that geological change…

A: Theory of catastrophes by George's Cuvier According to this theory, fossil show that animal and…

Q: Which of the following events occurred earliest in Earth’s history? a. Membrane-enclosed structures…

A: Recognizable human beings appeared on a geological scale at most 2 million years ago, a vanishingly…

Q: Colonization of Land The Cambrian explosion Flowering plants Endosymbiosis Origin of Reptiles First…

A: Introduction : The Geologic Time Scale divides the Earth's history into four…

Q: When did man first appear on Earth?

A: Human evolution is the evolutionary process that led to the emergence of anatomically modern humans.…

Q: During what geologic period did life on Earth begin?

A: Evolution is the process of gradual changes occurring in the species over a period of time, when the…

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: Life originated from the earth’s inorganic atmosphere in the post, but this no longer happens today.…

A: Theories from various scientists propose that in Earth's prebiotic history, simple organic matter…

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: Why were cyanobacteria so important in the evolution of life onEarth?

A: Cyanobacteria is a known phylum that is known to contain the photosynthetic bacteria along with the…

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: 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: What was the Earth like million of years ago?

A: Millions of years ago, there is no life on the Earth. The temperature of the Earth was scorching,…

Q: .Who among these evolutionary thinkers stated that the living forms come from the seas? a. Erasmus…

A: Introduction Evolution:- It is simply the biological change of a species over a span of time or the…

Q: Which of the following is true? A) Life originated around volcanic vents deep in the oceans. B)…

A: Abiogenesis is the theory that explains that life originated by the spontaneous process in hot…

Q: Have we identified all life on Earth

A: Biologists have described and classified 1.7 million plants and animals as of 2010, less than…

Q: Oceans were a good environment for early organisms because tney O shielded organisms from…

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

Q: Which scientists investigated the origins of organic molecules on the primordial Earth?

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

Q: What was the reason dolly the sheeps birth important for science?

A: Cloning is a technique of formation of organisms that is clone / exactly similar to their parent .…

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

A:

Q: How did the presence of molecular oxygen in the atmosphere affect early life?

A: Life originated nearly 3.6 billion years ago in the deep ocean.  The first organisms to be evolved…

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: How would you describe earth of millions year ago

A: It is believed that our planet Earth is about 4.54 billion years old.  About 3.5 billion years ago…

Q: Could the First Biological Molecules Have Formed NearVolcanoes on Early Earth?

A: In 1953, Stanley Miller conducted an experiment in the laboratory of Harold Urey to understand the…

Q: How greatly do men cause Earth to change? Does it signify the start of a new epoch

A: Epoch is defined as the fixed point of time in history, which is established y the occurrence of…

Q: QUESTION 1 The first life on earth arose about ; the first eukaryotes appeared about O 3.5 million…

A: Life originated on the Earth millions of years ago, and since then innumerable varieties of living…

Q: Arrange these events in order of occurrence, with 1 being the earliest and 6 the most recent. First…

A: From the time earth came into existence, till now, our planet has gone through several changes.…

Q: How did the Miller-Urey experiment impact the way scientist think about the origins of life

A: The slow and gradual change over a period of time is called evolution. There are many theories of…

Q: What was the “Cambrian explosion” and how might you explain it?

A: Introduction  Cambrian explosion event was occurred nearly 541 million years ago during the Cambrian…

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: The field of geology helped to set the stage for the Theory of Evolution through an understanding…

A: Evolution is the science of how life evolves over ages, and evolutionary biology is the science of…

Q: How does evolution explain the biodiversity of life on earth

A: Biodiversity is the abundance and variety of life on the planet. It involves the different species…

Q: Approximately when did life first appear on land A. 500 million years ago B. 2 billion years ago…

A: Question - Approximately when did life first appear on land A. 500 million years ago B. 2 billion…

Q: Why was the origin of cyanobacteria of suchimportance to the evolution of life on Earth?

A: Cyanobacteria, also known as Cyanophyta are a phylum of prokaryotes consisting of both free-living…

Q: Which sequence of events accurately describes the history of the planet (from oldest to youngest)?

A: The history of our planet, Earth, started with the formation of the solar system. The solar system…

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: