Q: Why is it hard to create a timeline of events chronicling Earth’s History?
A: There are timeliness but they are often conjectured and who can argue with them with an alternative.…
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: The heaviest elements during the Earth’s formation were what? What part of the Earth did they form?…
A: The structure of the earth is divided into four major components: the crust, the mantle, the outer…
Q: a direct outcome of the formation of the Moon according to the giant impact theory?
A: The giant impact theory suggests that the Moon formed out of the debris left over from a collision…
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: 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: What is the origin and function of terra preta?
A: Terra Preta (Portuguese for "Black Earth") is a soil-building technology invented by ancient…
Q: Why can Earth, in many ways, be considered amicrobial planet?
A: Micro-organism are tiny organisms that cannot be seen by the naked eye, but are visible under…
Q: What does not orbit the sun
A: Jupiter is the sun's fifth planet.The gas giant is the solar system's largest planet, weighing more…
Q: What argument convinced most scientists in the 1800s that Earth was more than 6,000 years old?…
A: Fossils are the remains of the organisms that were present on the earth in the past.
Q: describe 3 characteristics that make e
A: The third planet from the sun is the earth. And 29.2% surface of the earth is land and the remaining…
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: 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: List several significant events in the history of life on earth that are associated with the K-T…
A: KT boundary is the boundary between the age of reptiles that occurred in the Mezoxoic era and age of…
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: 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 argument convinced most scientists in the 1800s that Earth was more than 6,000 years old? O The…
A: Introduction All life on earth began from the universal last common ancestor which lived 3 to 4…
Q: “Life has profoundly changed the Earth.” Explain whether or notthese experimental results support…
A: The earth was formed about 4,570 million years ago and over the passage of time, different…
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: HOW OLD IS EARTH? HOW LONG DID THE LONGEST EON (SO FAR) LAST?
A: Different planets have different atmosphere.
Q: what element rise that caused the diversification event in evolution of earth
A: Introduction : The rise in oxygen, which is termed the Great Oxygenation Event is an important event…
Q: If the earth migrated backward to three times it's current distance away from the sun, by how much…
A: Let Fg1 be the gravitational force when distance of earth from sun is x Let Fg2 be the gravitation…
Q: Which of the following is not thought to have been a source of organic molecules on early Earth?* O…
A: Cosmic dust
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: Which of the following theories as regards the origin of life on earth is accepted today? A. Theory…
A: The origin of life on earth is known to arise from the non-living matter, organic compound. The…
Q: We are relatively "new" to the Earth yet how come our impact to the Earth System has been profound?
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: During the Paleozoic, many life forms developed hard parts (shells/bones/etc.). Why would it be…
A: Shelled animals, the majority of which are sea-based, come in a wide range of shapes and sizes.…
Q: The earth is about 4.6 billion years old. Based on the formation of seafloor spreading, why do you…
A: The newest, thinnest crust on Earth is located near the center of mid-ocean ridge—the actual site of…
Q: Give 1 reason from the reading that shows that there are no life forms on Venus.
A: Venus is the second planet in our solar system that is named after a female. It is slightly smaller…
Q: True or false. The supercontinent pangaea formed about four billion years ago.
A: A supercontinent is a landmass that contains most or all of the land on Earth. The landmass formed…
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. How old is the Earth? B. How long did the longest eon (so far) last? C. How many years ago did…
A: Epoch is longer than era. Eon is the longest period of geological time.
Q: Radiometric dating is a technique used to determine the age of rocks. Geologists have used this…
A: Radiometric dating is a technique used to determine the age of rocks. There is a constant rate of…
Q: What are stromatolites? From what we know of their formation today, why might we expect them to have…
A: Photosynthetic microbes live on the surface of the water. These microbes generate oxygen during the…
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: Describe the conditions on Earth 4.5 billion years ago
A: Evolution is the process of slow gradual change over a period of time. The process of evolution…
Q: How are the different periods in the history of the earths broken up?
A: Evolutionary biology is the branch of biology that deals with the study of evolution or orderly…
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…
Q: 19.Approximately how old is earth? Group of answer choices a.about 4.567 billion years b.about a…
A: Fossils are dead plants and animals that have been preserved in sedimentary rock or other crust…
What evidence would you look for on one of these moons that would tell you that life may have existed on it in the past?
Step by step
Solved in 2 steps
- What does it tell us if we discover life on one of these moons and it has characteristics similar to those of life on Earth? What if it is very different?What was the Earth like million of years ago?When scientists try to assess the habitability of Mars, what is their guiding principle, based on what we know of life on Earth?
- For how long has there been life on Earth? For what percentage of time has life existed on Earth? For about how many years of geological time have human existed on earth?The Miller-Urey experiment simulated compounds present in the atmosphere of early Earth, lightning, and the evaporation and condensation of atmospheric water. What other information about the conditions on Earth during this time period would you want to know to improve the experimentWhat Planet has a sustain life?
- What is the most logical theory on the topic of the Origin of Life?The biggest living in earth?(e) If you collected a sample of water being ejected from Saturn's moon, Enceladus, you could examine it for isotopic signatures of life. Explain why this might not be definitive and describe one other way in which you could test a sample of this water for biological material.