Which of these constitute credible fossil evidence for the oldest life on Earth? -The stromatolites from...

Which of these constitute credible fossil evidence for the oldest life on Earth?

-The stromatolites from the Barberton Mountain Land in South Africa.

-Large, up to 300 µm in diameter spheroids made up of isotopically light carbon found in the Moodies Group (South Africa).

-Cyanobacterial fossils from the Apex Chert in Australia.

-Zircon crystals from the Jack Hills Conglomerate in the Yilgarn Block, Western Australia.

Solutions

Expert Solution

The fossil remains in the Barberton Greenstone Belt of south Africa are as old as 3.5 billion years. The Archean life history could be studied from this belt due to exposed sedimentary and metasedimentary rocks.

Organic-walled microfossils in Mesoarchaean shales and siltstones Moodies Group, South Africa are nearly 3.2 billion years old. These are the oldest Archaean organic-walled spheroidal microfossils reported.

The basalt formations of Apex Chert in Western Australia were dated at 3.465 billion years.

The haden zircons formed around 4.39 billion years ago in the Mid West Western Australia. It is the oldest dated material of earth till today.

Based on the above information, it is clear that Option D i.e “Zircon crystals from the Jack Hills Conglomerate in the Yilgarn Block, Western Australia” constitute the credible fossil evidence for the oldest life on Earth

gladiator answered 1 year ago

Next > < Previous

Related Solutions

What evidence suggests that the biochemistry of life elsewhere would resemble that on Earth?

The best fossil evidence suggests that life began 4 billion years ago. But free atmospheric oxygen...

The best fossil evidence suggests that life began 4 billion years ago. But free atmospheric oxygen didn't really peak until about 2.5 billion years ago. Multicellular animals did not arise until about 600 million years ago. While there is some evidence for photosynthesis and biological creation of free oxygen much earlier than that, it seems like much of the world was anoxic (without free oxygen) for over a billion years of evolutionary time. Oxygen is highly corrosive, and too much...

2. Does a source of evidence have to be unbiased to be considered credible? Give an...

2. Does a source of evidence have to be unbiased to be considered credible? Give an example to support?

Evolution occurs as a result of natural selection. You have looked into the fossil evidence of...

Evolution occurs as a result of natural selection. You have looked into the fossil evidence of the transition as well as the genetic basis of the genes responsible. For this section, theorize and describe how natural selection selected for the adaptation and why it was successful for the organisms in question.

Based on fossil evidence, it appears that the original population of Furred Zee-s split, where a...

Based on fossil evidence, it appears that the original population of Furred Zee-s split, where a subset of the population moved towards the south and became isolated after an earthquake created a large rift through the continent The southern Zee population evolved over time to have significantly less fur that the original population and have been considered a separate species (Naked Zee-s)). A few of the fossil organisms have indications of fur, suggesting that the ancestral state was furred Three...

Think of the oldest person you know. How are the theories of high integrity, reminiscence, life...

Think of the oldest person you know. How are the theories of high integrity, reminiscence, life review, activity, disengagement, and continuity manifested in his or her life?

14. If the greenhouse effect is necessary for life on earth (it is!) why is it...

14. If the greenhouse effect is necessary for life on earth (it is!) why is it that people are so concerned about it now? What has changed related to the greenhouse effect over the last 100 years? (1pt)

a) The discovery of ribozymes led to the theory that the evolution of life on Earth...

a) The discovery of ribozymes led to the theory that the evolution of life on Earth began with an “RNA world.” Describe how the current cellular roles of RNA support this theory. b) Draw a diagram of the transcription and translation of the trp operon under high tryptophan conditions. In addition to the trp operon, show RNA polymerase; the 5` UTR RNA with regions 1, 2, 3, 4, and the string of uracils; and a ribosome.

calculate the distance d from the center of the earth at which a particle experiences equal...

calculate the distance d from the center of the earth at which a particle experiences equal attractions from the earth and from the moon. The particle is restricted to the line through the centers of the earth and the moon. Justify the two solutions physically.

A policy calls for the elimination of the use of all fossil fuels ; which of...

A policy calls for the elimination of the use of all fossil fuels ; which of the following would impact this policy? it would reduce the price of goods like electricity it would reduce fossil fuel consumption beyond the socially optimal level it would maximize social welfare it would result in the optimal level of greenhouse gas emissions

Subjects