Early atmoshphere contained methane and other hydrocarbons. They have been now replaced by
a)
Nitrogen
b)
Oxygen
c)
Carbon dioxide
d)
Hydrogen
Correct answer is option 'C'. Can you explain this answer?

Question

Early atmoshphere contained methane and other hydrocarbons. They have been now replaced bya)Nitrogen b) Oxygenc)Carbon dioxided)HydrogenCorrect answer is option 'C'. Can you explain this answer?

Answer

Now a days due to work against nature amount ofCO2 become much ...so methane and other hydrocarbon replaced by CO2..

Answer

Bro early atmosphere me  jo bhi tha use hot dilute shup kahte h ( evolution chapter)  jo ki mixed and vapour and electrical power  se CO2 and other product m change hua h .  ok bro

Answer

Early Atmosphere and Its Composition

The early atmosphere of Earth is believed to have been primarily composed of gases like methane (CH4), ammonia (NH3), water vapor (H2O), and hydrogen (H2). This composition is based on scientific studies and the analysis of ancient rocks and minerals.

Replacement of Methane and Other Hydrocarbons

Over time, the composition of the Earth's atmosphere has undergone significant changes. The early atmosphere, rich in methane and other hydrocarbons, has been replaced by several gases, including nitrogen (N2), oxygen (O2), carbon dioxide (CO2), and hydrogen (H2O).

The Role of Nitrogen

- Nitrogen (N2) is the most abundant gas in the current atmosphere, accounting for approximately 78% of its composition.
- It is believed that nitrogen was introduced into the atmosphere through volcanic activity and the outgassing of the Earth's interior.
- Nitrogen plays a crucial role in maintaining the balance of gases in the atmosphere and is essential for the survival of many organisms.

The Role of Oxygen

- Oxygen (O2) is the second most abundant gas in the atmosphere, making up around 21% of its composition.
- The presence of oxygen in the atmosphere is mainly attributed to the development of photosynthetic organisms, such as cyanobacteria and plants.
- These organisms release oxygen as a byproduct of photosynthesis, gradually increasing its concentration in the atmosphere over millions of years.

The Role of Carbon Dioxide

- Carbon dioxide (CO2) is another significant gas in the atmosphere, currently comprising about 0.04% of its composition.
- It is produced by various natural processes, including volcanic activity, respiration, and the decay of organic matter.
- Carbon dioxide also plays a crucial role in the Earth's climate system as a greenhouse gas, trapping heat and contributing to the greenhouse effect.

The Role of Hydrogen

- Hydrogen (H2) is a minor component of the Earth's atmosphere, accounting for less than 1% of its composition.
- It is primarily present in the atmosphere in the form of water vapor (H2O), which is continuously cycled through various natural processes like evaporation, condensation, and precipitation.
- Hydrogen is also important in the Earth's climate system as it influences cloud formation and precipitation patterns.

Conclusion

In summary, the early atmosphere of Earth contained methane and other hydrocarbons, but these gases have been replaced over time by nitrogen, oxygen, carbon dioxide, and hydrogen. This transformation in the composition of the atmosphere has occurred due to geological processes, the evolution of life forms, and the influence of natural cycles.

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