The researchers found that the Neanderthal fossil had approximately0.0078 as much 14C as found originally in the atmosphere. (a) Usingthe numbers on your graph, determine how many half-lives havepassed since the Neanderthal died. (b) Using your 14C calibration onthe x-axis, what is the approximate age of the Neanderthal fossil inyears (round off to the nearest thousand)? (c) Approximately whendid Neanderthals become extinct according to this study? (d) Theresearchers cite evidence that modern humans (H. sapiens) becameestablished in the same region as the last Neanderthals approximately 39,000–42,000 years ago. What does this suggest aboutthe overlap of Neanderthals and modern humans?

Q: Even though paleontologists and anthropologists are continually finding new fossils, there is still…

A: Even though paleontologists and anthropologists are continually finding new fossils, there is still…

Q: Carbon-14 dating works for fossils up to about 75,000 years old;fossils older than that contain too…

A: Radiocarbon dating is a method which will help us estimate the age of objective for carbon based…

Q: What do you think geologists would find in the rock record as evidence of human life today million…

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

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A: Taphonomy refers to the branch of paleontology (study of life history based on fossils) which is…

Q: What is the correct order of appearance in the fossil record, starting with the earliest: reptiles,…

A: Vertebrates comprise mammals, birds, reptiles, amphibians, and fish, a widely recognized category of…

Q: What is the “Cambrian explosion,” and why is it significant?

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Q: Describe the evolutionary significance of the Cambrian explosion.

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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…

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A: The evolution is an important during thus event many population was appered on earth and many…

Q: 19. When a radio-isotope in a fossil with a half-life of 3,000 years has been reduced to 1/8th of…

A: On completion of each half life  the  amount of the substance reduces to half of its initial value.…

Q: How do we know the age of a fossil?

A: The change in the heritable characteristics of the species across many generations is called…

Q: What kind of fossils were formed out of dinosaur remains and activities? Why do you say so? (Give…

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Q: Cambrian explosion occurred?

A:

Q: Which of the following is not a hypothesis used to describe the sudden change in the diversity of…

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Q: The Cambrian Explosion occurred due to the widespread adoption of bilateral symmetry and the…

A: INTRODUCTION The Cambrian explosion or Cambrian radiation was an occasion approximately 541 million…

Q: Why is animal evolution during the early Cambrian referred to as an “explosion”?

A: The evolution during the early Cambrian referred to as an explosion. Here we will discuss why it is…

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Q: Why are all of the fossil taxa from the Pliocene in this module called hominins?

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Q: What led Walter to study the mass extinction of the dinosaurs? O He was following in the footsteps…

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Q: Which of the following is the best way to measure the age of the Earth? O Examine rocks collected in…

A: Test the rate of decay of specific elements in rock samples

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Q: Why did Shubin and his colleagues choose to look in the Canadian Arctic for transitional fossils?

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Q: Why do we need to know the age of a fossil?

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Q: Fossil discoveries from East Africa have established the clear presence of Homo erectus by…

A: Answer is 2 mya. Fossil discoveries from East Africa have established the clear presence of Homo…

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A: Archaic Homo sapiens were present approximately 400,000 to 125,000 years ago.

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 geology was occuring aroung the cambrian explosion that may have contributed to this…

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Q: When a radio-isotope in a fossil with a half-life of 4,000 years has been reduced to 25% of its…

A: Scientists use a clock to calculate the date a rock or fossil was generated in order to ascertain…

Q: ldest in a given strata and why?

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A: Epoch is longer than era. Eon is the longest period of geological time.

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A: Radioactive carbon dating is the process of determination of the approximate age of an ancient…

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A: The study of chemical reactions that occurs within living organisms is called biochemistry. This…

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A: Classic ( European ) Neanderthal were fossils that inhabit Eurosia region . They were known as…

Q: 48. Homo erectus was present approximately   4.5 – 1.0 million years before present.   2.5 – 1.8…

A: Homo sapiens has been around 400,000 years and shows the ability to survive in diverse environmental…