Which staterment from the choices below, BEST describes scientists current understanding of the conditions required for the origin of life on Earth? Earth's early atmosphere contained mos tly carbon dioxide. In addition, water vapor condensed and foll as rain forming pools Lightning provided the energy noeded for reactions an earth. Earth's early atmosphere contained mostly oxygen. In addition, there was no liquid water during this time Lightring provided the energy necded for reactions on earth. O Earth's early atmosphere contained mostiy nitrogen In addition, there was no liquid water during this time. Lightning provided the energy needed for reactions on earth O Earth's early atmosphere contained a mixture of gases. In addition, water vapor condensed and felI as rain forming pools. Lightning provided the energy needed for reactions on earth

Q: When did photosynthetic organisms first appeared? O From the very beginning of life, they are some…

A: Photosynthetic creatures, also called photoautotrophs, are photosynthesis-capable organisms. Higher…

Q: HISTORY OF LIFE ON EARTH can safely opper layer hquake), ists then d in the cientist t level ter ago…

A: Let's break down each question step by step: 1.1) The solid formed from the hardening of the liquid…

Q: The Miller-Urey experiment simulated compounds present in the atmosphere of early Earth, lightning,…

A: Miller Use four compounds or particle in his experiment these are water, methane, ammonia and…

Q: x + pQLSdhkT-CA8CXZZX-5utkvr4IY6K1qFdA05BqTWJIUb0ovIH-Cg/viewform?hr_submission= der GGenetic drift…

A: OXYGEN ATOMS HAVE 8 NEUTRONS . THIS IS ALWAYS TRUE. Oxygen have isotope with 8 protons and 8…

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: The oxygen revolution permanently changed Earth’s environment and dramatically impacted the…

A: We are answering first 3 questions. For rest of questions pls repost.     Oxygen evolution is a…

Q: Summarize at least one hypothesis that explains each ofthe four stages of the origin of life.

A: Origin of life : It is the natural process by which life has arisen from non-living matter, such as…

Q: How do organisms form carbon films? O Organisms turn into rock. Residue is left on rocks when…

A: A thin-film coating that is composed predominantly of the chemical element called carbon is termed…

Q: Which of the following accurately describes the Hadeon Eon? Earth during the Hadeon Eon closely…

A: An eon is a geological time unit that represents a span of a billion years or more in the Earth's…

Q: The concept that describes whether a particular location Habitability (especially a planet) can…

A: Note: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question…

Q: underground into hardened rock. melted rock is READING Diagrans called magma. What causes a…

A: Rocks forms the important part of the earth. The cycle of rock formation is evident as it helps in…

Q: Relative dating of sedimentary rocks allows scientists to assign specific dates to fossils.

A: It is difficult to date sedimentary rocks since they range to billions of years ago. So, the…

Q: How many valence electrons does calcium (Ca) have? * O 20 4. 2. This is a required question Most of…

A: How many valence electrons does calcium have? Answer ) two .

Q: Taxonomists use or shared derived traits, to differentiate between organisms and groups of…

A: Taxonomy is the study of principles and procedures of classification. Taxonomy includes…

Q: Fund the KT Boundary Layer Found the DNA structure Found the DNA shape Described Natural Selection…

A: Evolution is the gradual change in the inherited traits of biological populations over many…

Q: Radiometric decay of carbon-14 would be used in dating sedimentary rock. a trace fossil. an insect…

A: Radiometric decay is a method dating substances of possible majority of organic content. Principle:…

Q: 31) How Fossils are Made YEARS For an organism to become the conditions have to and be or animals…

A: Evolution in biology can be mostly simply described as descent with modifications, which…

Q: Event How Long Ago? # Organisms Extinet Causes Cretaceous

A: Cretaceous extinction :  Cretaceous extinction took place about 66 millions ago . Organisms which…

Q: 100 No. of Daughther atoms No. of Atoms 50 25 12.5 No. of Parent atoms 6.25 12 4. No. of half life…

A: The decay of 14C, a radioactive isotope of carbon with a fairly long half-life, is used in carbon…

Q: 69. Theoretically, radiocarbon dating (Carbon-14) can date materials that are at most   1.31…

A: Radiocarbon dating (also known as carbon dating or carbon-14 dating) is a method of determining the…

Q: One of the prerequisites for chemical evolution on early Earth is that there was an adequate amount…

A: on the early earth, there had much time to generate a suitable condition which may lead to the…

Q: What is the significant about the type of structure shown in the image? Select one alternative: O…

A: The image is that of a coral which is forund in the seas.

Q: Describe how scientists have tested the hypothesis that simpleorganic molecules could have formed on…

A: There are fossils that were discovered from Western Australia 3.5 million years ago (mya). This…

Q: Question 5: Give a brief description of the evolutionary changes that occurred throughout geologic…

A: A phylogenetic tree is a diagram that delineates the connections between a few species or groups of…

Q: Metagenesis takes place below the Earth's surface where temperature is less than 150°C . Select one:…

A: Answer : True

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 did Wegener call the giant land million years ago? Pangaea O Big Ol' Continent Gigantia…

A: The supercontinent began to break apart about 200 million years ago, during the Early Jurassic Epoch…

Q: Which staterment from the choices below, BEST describes scientists current understanding of the…

A: Answer: THE ORIGIN OF LIFE ON EARTH was started around 3.8 billion years ago. and this was difficult…

Q: Humans have been around for only about years of the planet's 3.8 billion years in existence. 90,000…

A: Approximately 6 million years ago, a primate group known as Ardipithecus formed the first vital…

Q: Which of the following is the last step in the Oparin-Haldane Model for the beginning of life?   a.…

A: oparin and haldae suggested the  origin of life on earth , via the abiotic evolution .

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: Which later represent the oldest layer

A: The earth internal structure is given in the image with different layer of earth.  The layer of…

Q: Most fossils are formed of the______ parts of an organism

A: The fossil means the trace of an organism is preserved in Earth's crust for years.

Q: Which of the following would be required for the first life forms to have originated on Earth? Mark…

A: The entire process of biochemical origin of life can e categorized into two subsequent events :…

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: Large amounts of oxygen gas first appeared in Earth's atmosphere about ______ years ago. 10…

A: The theory behind the appearance of large amounts of oxygen gas in Earth's atmosphere about 2.7…

Q: A. What is the PROTEROZOIC LIFE? B. Discuss the Great Oxygenation Event. C. Discuss the CAMBRIAN…

A: Geological time scale is a evolutionary event  which determines how the life appear , its…

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

A:

Q: Scientists think that terrestrial life probably originated in Earth's oceans because Choose one:…

A: Question - Scientists think that terrestrial life probably originated in Earth's oceans because…

Q: Equater Permian - 225 million years ago Triassic - 200 million years ago Jurassic - 135 million…

A: Introduction Twenty million years ago the Indian and Asian continental plates clashed and pushed up…

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: Can organic molecules form under conditionsestimated to simulate those on the early Earth?

A: Organic molecules are those composed of carbon atoms in the ring to which other atoms like hydrogen,…