What was the Earth like million of years ago?

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: A scientist discovers something new about the composition of the mantle. What type of rock (group)…

A: The mantle is the part of the earth between its crust and its core.

Q: What is the most logical theory on the topic of the Origin of Life?

A: In the 1920s, English scientist John Burdon Sanderson Haldane and Russian scientist Aleksandr Oparin…

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: 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: 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 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: 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: Whose discovery made the dating of ancient materials possible?

A: Radiocarbon dating works by comparing the three different isotopes of carbon. Isotopes of a…

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

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

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: What is examined to do relative dating? O A. Layers of sediment O B. Uranium deposits O c. Carbon-14…

A: Answer- Relative dating is the process by which layers of sediments including fossils are studied to…

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: what simple organic molecules were likely the precursors of life? a. water and proteins b. amino…

A: The two important aspects of life are its origin and evolution. The branch of life science, which…

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: 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: How were biomolecules likely to have formed on the early Earth?

A: The fundamental biochemical similarities that were observed in living organisms have developed…

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 theory of the origin of life do you think is most possible? Why?

A: There are so many theories of the origin of life is available. First of all, we will know about the…

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 are the 3 layers of the earth

A: The distance from beneath your foot to the center of the earth is approx 6,371 Km.  The internal…

Q: The biggest living in earth?

A: Introduction Biodiversity refers to the availability of different types of species of different taxa…

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: 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: HOW OLD IS EARTH?   HOW LONG DID THE LONGEST EON (SO FAR) LAST?

A: Different planets have different atmosphere.

Q: Adaptive radiation

A: Evolution evolution is a process by which organisms adapt and grow to serve better in their natural…

Q: How does evolution work to create the diversity of life on Earth

A: The gradual development or change in organisms with accordance to the changing environment for their…

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 is the moon

A: Earth planet is at third position from the sun.Around 71 percent of earth surface is covered with…

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: 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: Based on the Origin of Life by John H. McClendon, how did life on earth start based on the different…

A: John H. McClendon published the Origin of Life in 1999. There he mentioned the origin of the…

Q: For how long has there been life  on Earth? For what percentage of time has life existed  on Earth?…

A: Any net lateral change or continuous change in the traits of species or populations over several…

Q: The 1st law of energy and conservation says that matter cannot be created or destroyed, but you’re a…

A: The increase in size and changes in shape of a developing organism depend on the increase in the…

Q: why would understanding the origins of life on earth help with discovering life on other planets

A: * Earth is the planet which supports most of the habitats. * The origin of life on earth is the…

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: 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: What Planet has a sustain life?

A: Planets are the celestial bodies which revolve around sun in definite orbits.

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: Single-celled Eukaryotes were preceded by what environmental development on Earth? O a. The forming…

A: Eukaryotes are the organisms having well defined nucleus with cellular organelles such as…

Q: Life first appeared on Earth ___________ of years ago. Choose one: A. billions B. hundreds…

A: Earth is formed around ~4.5 billion of years ago. Life on earth had started after some time.

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…

Q: 3. You are surveying an area's rock layers using absolute dating. You have an element whose…

A: Several dating methods are used to find the age of rocks and fossils. The methods include…

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: 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…

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.