The Earth is very similar to Venus in terms of mass and density, while Earth and Mars are planets that roughly have the same amount of dry land surface area [4]. However, the overwhelming majority of evidence shows and confirms that Earth, Venus and Mars have different atmospheres. In this essay, the evolution of atmosphere on Earth, Venus and Mars are compared and the current atmospheric conditions on these three planets are illustrated by showing the differences between them. Moreover, this essay describes how the atmosphere of Earth has allowed for life to originate, survive, and develop whist demonstrating how has life affected the atmosphere over time.
To begin with, comparing the formation and the evolution of the atmosphere on Earth …show more content…
The appendix 3 depicts estimates of changing concentrations of the oxygen in the atmosphere over geologic time. The area in light blue illustrates the range of the possible concentration of oxygen based on model calculations, the study of ancient soil, fossil organisms and marine sediments that only form in the absence of oxygen. About 1.8 billion years ago, Scientists found that these sediments are conserved as Banded Iron Formation called BIF and only found in this period. Although scientists do not know exactly when photosynthesis began, it is clearly seen that photosynthesis is the only important producer of oxygen in the atmosphere in the history of Earth. PAL represents the present atmospheric level of oxygen …show more content…
Scientists do not know exactly what led to the origin of life because the evidence of the formation and the evolution of the Earth lost after 5 billion years ago. So, scientists have to use chemical processes by using fossil records dating back to 3.5 billion years ago to find what led to the origin of life [2]. The early atmosphere of Earth most likely imitated of the Jupiter’s atmosphere, which have hydrogen, helium, methane and ammonia and it is dangerous for humans. It is no free oxygen in its atmosphere. Then, the second atmosphere of the Earth was formed from the out gassing that can evaporate such as water vapour, carbon monoxide, methane, ammonia, nitrogen, carbon dioxide, hydrochloride acid and sulphur. It is still no free oxygen. Around 4.1 billon years ago, the surface of Earth began to cool and stabilize then created the solid surface, which is a rocky ground. Then, the next 1.3 billion years ago, In Arhaean Period, bacteria is the first life that can alive in the toxic atmosphere. 2.5 billion years ago, In Proterozoic period, scientists find the first fossil called blue-green algae that could photosynthesize. In this period, it has an oxygen- forming photosynthesis. Free oxygen occurred in this period about 1.8 billion years ago and from this oxygen, it created condition that supporting life to survive. By the end of the Proterozoic period, Earth has evolution process unit this day.
To begin with, comparing the formation and the evolution of the atmosphere on Earth …show more content…
The appendix 3 depicts estimates of changing concentrations of the oxygen in the atmosphere over geologic time. The area in light blue illustrates the range of the possible concentration of oxygen based on model calculations, the study of ancient soil, fossil organisms and marine sediments that only form in the absence of oxygen. About 1.8 billion years ago, Scientists found that these sediments are conserved as Banded Iron Formation called BIF and only found in this period. Although scientists do not know exactly when photosynthesis began, it is clearly seen that photosynthesis is the only important producer of oxygen in the atmosphere in the history of Earth. PAL represents the present atmospheric level of oxygen …show more content…
Scientists do not know exactly what led to the origin of life because the evidence of the formation and the evolution of the Earth lost after 5 billion years ago. So, scientists have to use chemical processes by using fossil records dating back to 3.5 billion years ago to find what led to the origin of life [2]. The early atmosphere of Earth most likely imitated of the Jupiter’s atmosphere, which have hydrogen, helium, methane and ammonia and it is dangerous for humans. It is no free oxygen in its atmosphere. Then, the second atmosphere of the Earth was formed from the out gassing that can evaporate such as water vapour, carbon monoxide, methane, ammonia, nitrogen, carbon dioxide, hydrochloride acid and sulphur. It is still no free oxygen. Around 4.1 billon years ago, the surface of Earth began to cool and stabilize then created the solid surface, which is a rocky ground. Then, the next 1.3 billion years ago, In Arhaean Period, bacteria is the first life that can alive in the toxic atmosphere. 2.5 billion years ago, In Proterozoic period, scientists find the first fossil called blue-green algae that could photosynthesize. In this period, it has an oxygen- forming photosynthesis. Free oxygen occurred in this period about 1.8 billion years ago and from this oxygen, it created condition that supporting life to survive. By the end of the Proterozoic period, Earth has evolution process unit this day.