The Earliest Evidence For Life On Earth

Question:

What is the oldest evidence for life on Earth?

Answer:

Introduction

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Science has presented many evidences to support the idea that life on Earth is present since infancy.

While most scientists believe that life is present on the planet as far back as man, others have shown that it hasn’t been there for so long.

Fossils are sufficient to confirm the evidence already available, as well as other organism bodies preserved at historic sites.

The planet’s atmosphere has been changing over time, which has had many consequences for the way we live.

Therefore, it is important to consider all aspects of astronomy in order to complete every management study.

Many records provided by scientists can be used to prove the existence of life.

Scientists can use the most basic methods to discover fossil records in order to prove that life exists on Earth.

It is not unusual for fossils in sedimentary rocks to form beneath the surface of a water body.

Xu et.al. (2017). Fewer organisms are preserved in sediments when their bodies begin to decay.

Scientists can sometimes obtain complete organisms from the rocks that they have formed.

However, there may be some organisms that cannot be saved in the sediments.

Scientists will need the bones and shells of these organisms to help them understand how life is present on the planet.

According to Dodd and colleagues (2017), it is challenging for scientists to find fossils from organisms that died many years ago.

Studies show that Cambrian Period had very few organisms with shells or bones, and therefore soft organisms couldn’t form fossils.

Scientists have found very few fossils of organisms who lived during the above period. This is due to the fact that most organisms at the time were in microbial form.

It is also difficult for scientists to find fossils because of the recycling process, which converts parts of organisms into another form.

Decomposition of earth that occurs in unending fashion deforms plates, making it hard to determine the age in which the organism is present.

Darwin’s Dilemma was an obstacle to finding fossils from the Cambrian Period.

Because fossils were not readily available during the pre-Cambrian Period it was difficult for fossils to be found.

It is clear that organisms didn’t exist in times before the Cambrian Period.

In 1965, two experts declared categorically that fossils more than 2 billion years old had been discovered (Caro Morino Mojzsis Cates, Bleeker, 2017).

They discovered the fossils at the Gunflint Chart which is located near Lake Superior.

The fossils came in the form of microfossils, and stromatolites.

Scientists later found remains of organisms which had existed for more than 3 billion years.

The fossils that dated back 3.5 billion year proved that life existed even in the Pre-Cambrian Period.

Stromatolites can be described as structures formed from layers by colonies of micro-organisms.

Stromatolites are formed from layers of rocks when different organisms are cemented together.

They can be found only in shallow waters, and not in other locations.

Shark Bay in Western Australia, Australia is an example of a place on earth where stromatolites exist in large quantities.

Some structures have disappeared while others are only visible in highly saline waters.

Scientists who study Stromatolites found that they were often located in Archean, Proterozoic and Prehistoric periods. It will therefore be difficult to locate these structures in the Archean, Proterozoic and prior.

Scientists have concluded that stromatolites can’t be considered biological creatures, and can be classified as part or life (Caro. Morino. Mojzsis. Cates. Bleeker, 2017.

They believe that stromatolites only appear in association to microfossils and are therefore part of the biological creation.

According to history, the existence of life on this planet is controversial.

Another problem is the conflicting scientific opinions regarding the existence of life before billions, or millions, of years.

Scientists differ on the date of fossils, with some claiming they are from as early as 3.5billion years ago.

Bill Schopf, a scientist, stated that 3.5billion years ago, microbial activity had just begun. He also claimed that such fossils would be abundant in that time period (Huang Chen Wignall and Zhao 2017, 2017).

Martin Brasier, another scientist claims that there is no evidence that the fossils discovered were fossils. They are formed from reactions between volcanic rock and vein chart.

Pilbara’s rock has stromatolites dating back to 3.43 billion years. According to research, they are also the oldest known form of stromatolites on Earth.

These stromatolites can be found deep under the water and are believed to be coral stromatolites.

Wilhelm et. al.

Scientists can use layers in rocks to reveal more information about an era and appreciate the existence of different organisms during these eras.

The study of rocks can help scientists understand when particular organisms survived.

Geological research is not new to man’s life. Therefore, scientists still have fossils from as far back 550 million year ago.

Geological research also suggests that life on Earth has existed for more than 4 billion year.

The molecular records of life are another form of life. They seek to understand how life exists on the other side.

The molecular records of life study the molecules found in each organism’s DNA. They also look at how closely they are related to allow scientists to draw comparisons between the two DNAs.

The scientists concluded that 98 % of the DNAs of human and chimpanzees matched, which led them to believe they were interconnected.

There are not enough genes to sustain life on Earth. It is generally believed that most organisms are created by translation, transcription and replication of existing DNA.

The tree of Life can be used to describe life on earth. This tree divides life into three distinct fields: Archaea (Eukarya), and Bacteria. It is also the basis of the entire DNA concept.

Many scientists have conducted extensive research and found that the tree is made up of five domains. However, the Eukarya kingdom contains fungi, animals, plants and animals (Biswas Shome Raha and Bhattacharya 2017, 2017).

Simple cells make up the earth branches that are made of Archaea or Bacteria.

Eukarya was considered when this particular form of life was reduced to a narrower scope.

Eukarya cells have a complex structure and large nucleus.

Endosymbiosis describes the process through which eukaryotic cells can be created.

Endomsymbiosis, another term for the process by which organisms co-exist in the bodies of others is also known.

Organelles found within eukaryotes correspond to a symbiotic relationship.

A chloroplast is another type of life on earth that has been around for billions and years (Gale, Wandel 2017).

Photosynthesis, which took place billions of years ago, has led to the creation of chloroplasts.

According to some theories, chloroplasts are derived from a symbiotic relationship with their ancestor cells.

When the DNA is examined, you can see the symbiotic relationships between chloroplasts (and their ancestor cell counterparts).

Conclusion

A lot of evidences can be found in fossils, and very few organisms bodies. This is to show that life exists on Earth.

Some evidences were lost due to poor weather.

The planet’s atmosphere is constantly changing, which has had a variety of impacts on our way of living.

Many organisms cannot be preserved in sediments because their bodies decay before fossils can be formed in sedimentary rocks.

In 1965, two experts declared categorically that fossils more than 2 billion years old had been discovered.

The fossils were found near Lake Superior at the Gunflint Chart.

The fossils came in the form of microfossils, and stromatolites.

There are many scientific opinions that disagree about the existence of life prior to billions, or even millions of year.

All scientific studies agree that life on earth is present for as long as humans have been living on it.

We have enough evidence to believe that life on earth has seen many forms of it, so we can conclude that it is not a new phenomenon.

References

S. Biswas and A. Raha, B., Shome, A. and Bhattacharya A.B. (2017, 2017).

Re-examination of the Earth Similarity Index as a tool for finding habitable areas around extrasolar and sunlit planets.

Indian Journal of Accounting, Indian Journal of Accounting, Indian Journal of Accounting, Indian Journal of Accounting, Indian Journal of Accounting, Indian Journal of Accounting, Indian Journal of Accounting 91(1), pages 1-8.

Bleeker, W.

Sluggish Hadean Geodynamics: Evidence from coupled 144,547 Sm-142.143 Nd systems in Eoarchean supracrustals rocks of the Inukjuak Domain (Quebec).

Earth and Planetary Science Letters (477) pp. 23-37.

Dodd M.S.

Evidence for early life in Earth’s oldest hydrothermal lava precipitates.

Gale J. and Wandel A. 2017.

The potential of planets around red dwarf stars to support oxygenic biosynthesis and complex life.

International Journal of Astrobiology.

Zhao, L., 2017.

Latest Permian-Middle Triassic redox situation variations in ramp settings. South China: Evidence of Pyrite framboid.

Geological Society of America Bulletin (129(1-2), 229-239.

Opinion: Studies about the origin of life–the ending of the beginning.

The Xeropreservation and storage of functionalized lipid biomarkers on hyperarid soils in Atacama Desert.

Organic Geochemistry, No.103, pp.97–104.

2017, and Tu, C.

Evidence from southern Qilianshan, China. Proliferation MISS-related Microbial mats after the end-Permian Mass Extinction in the northern Paleo-Tethys.

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