Was there molecular oxygen in the earths primitive atmospher, Biology

Assignment Help:

Was there molecular oxygen in the earth's primitive atmosphere? How has that molecule become abundant?

The presence of the molecular oxygen in the primitive atmosphere was probably at a minimum and extremely rare. The Oxygen became abundant with the emergence of photosynthetic beings, approximately, 1.5 billion years after the appearance of life on the planet.

 


Related Discussions:- Was there molecular oxygen in the earths primitive atmospher

What is ascaris and which disease caused by this worm, Q. What is ascaris? ...

Q. What is ascaris? What is the disease caused by this worm? Ascaris lumbricoides or Ascaris is an animal of the nematode phylum that is a roundworm. Ascaris causes ascariasis,

Explains mechanisms by which histones interact with dna, Which of the follo...

Which of the following best explains mechanisms by which histones interact with DNA? A. Histone core proteins interact with the main groove of DNA by the helix-turn-helix-turn

Chemicals of life, give two examples of chemical reactions which are cataly...

give two examples of chemical reactions which are catalysed by enzymes in the course of brewing

Explain preparation and properties of modified starches, Preparation and pr...

Preparation and properties of modified starches Improved performance of starches may  be realized by physical and chemical modifications. The major physically modified starch i

How mineral salts participate in enzymatic activity, Q. How mineral salts p...

Q. How mineral salts participate in enzymatic activity? Many mineral salts are cofactors of enzymes that are the substances without which enzymes do not work.

What is the law of limiting factors, What is the law of limiting factors? H...

What is the law of limiting factors? How would the rate of photosynthesis be affected if the soil water becomes limiting? Describe.

#title.Homework., Why do you think it is necessary for physicians to have s...

Why do you think it is necessary for physicians to have so many different terms that describe fractures (compound, comminuted, transverse, greenstick, etc.)?

Define national iodine deficiency disorder control programme, Define Nation...

Define National Iodine Deficiency Disorder Control Programme (NIDDCP)? The prevalence of iodine deficiency disorders (IDD) are seen more among adolescent's young adults and sc

What is infra-diaphragmatic type of tapvc, What is Infra-diaphragmatic Type...

What is Infra-diaphragmatic Type of TAPVC? Initial stages of operation are the same as for supracardiac type of TAPVC. The heart is lifted out of the pericardial cavity and c

Explain renal insufficiency, Renal insufficiency  Antimicrobial drugs e...

Renal insufficiency  Antimicrobial drugs excreted through the urinary tract may be toxic for patients with renal insufficiency if they are given in usual therapeutic doses, bec

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd