How did discoveries in the deep sea influence scientists' ideas about whether life could be found elsewhere in our galaxy?

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 evidence would you look for on one of these moons that would tell you that life may have…

A: The proof that we would look at Moon is about the indication for aspects of life.For example-…

Q: What does it tell us if we discover life on one of these moons and it has characteristics similar to…

A: If we discover life on one of these moons and it shows alike characteristics as that of earth then…

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: 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: 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: 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: The first single-celled organisms on Earth probably evolved (a) 3,700 years ago (b) 3.7 million years…

A: Evolution is a process of slow and gradual change over a period of time. There are many pieces of…

Q: On the geologic time scale, life originated in the_____ . a. Archean c. Phanerozoic b. Proterozoic…

A: The geologic time scale is a chronological dating system that classifies geological strata into…

Q: With regard to the origin of life, why are biologistsinterested in the prebiotic synthesis of…

A: Introduction The Oparin-Haldane model suggested that under the highly reducing atmosphere of…

Q: Cambrian explosion occurred?

A:

Q: In what order did events occur that led to life on Earth? (1) appearance of aerobic organisms, (2)…

A: C is possible right answer

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: 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 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: 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: How does the structure of a DNA molecule help account for the great variety of life that exists on…

A: DNA is the specific and dominant building block of the entire living organisms. They provide almost…

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

A: Introduction: The Oparin-Haldane hypothesis proposed that inorganic molecules in the atmosphere of…

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

A: Scientists believe that the life on the earth began in the depths of the ocean and not on 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: 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: For how long has there been life  on Earth? For what percentage of time has life existed  on Earth?…

A: The age of the earth and proper research about the origin timelines of life had not yet researched…

Q: where on the earth did life mostly likely first emerge, where all the ingredients and conditions for…

A: There is an evidence that life began as early as 4.5 billion years ago , and had been reported in a…

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: 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: 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 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: Which event in Earth’s historyeventually lead to the evolution of multicellular lifeforms?

A: The process of evolution of multicellular life from simpler, unicellular microbes was an important…

Q: Oparin-Haldane hypothesis

A: Answer:

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: How do scientists really know how old the planet is?

A: A planet is a huge object like Earth or Mars that orbits a star. Planets don’t produce light and…

Q: A. What do scientists think the primitive Earth was like? Give 3 evidences.   B. How could life…

A: Our current atmosphere of twenty one percent oxygen would make the emergence of DNA & other…

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: When scientists try to assess the habitability of Mars, what is their guiding principle, based on…

A: Introduction Life:- It is defined as any system capable of performing functions such as breathing,…

Q: How do we know when oceans were first present on Earth?Why is the presence of oceans significant to…

A: The water body, which consists of hydrosphere of different planets, is called oceans. The 71%…

Q: What type of plates that float on top of the mantle do scientist believe that the Earth's crust is…

A: The earth is made up of different layers: 1)The Inner core- It is the inner and hottest layer of the…

Abiogenesis