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 cardiac catheterization, Q. What is Cardiac Catheterization? Ro...

Q. What is Cardiac Catheterization? Routine cardiac catheterization is not necessary in patients with mitral regurgitation. It may be done when there is discrepancy between cli

Define light source of microscope, Define Light Source of Microscope? I...

Define Light Source of Microscope? It is either mirror or electric illuminator present at the base. Identify the mirror in Figure. Some microscopes have reversible mirror with

Explain a home-made wormery, A home-made wormery A wooden box 30 cm by ...

A home-made wormery A wooden box 30 cm by 30 cm by 15 cm fitted with a glass front is beneficial for studying the habits of earth-worms. Fill the box nearly to the top with

Living beings are made of organic and inorganic substances, Living beings a...

Living beings are made of organic and inorganic substances. According to the complexity of their molecules how can each of those substances be classified? Inorganic substances

Transport of oxaloacetate, Pyruvate   carboxylase   is a mitochondrial   ma...

Pyruvate   carboxylase   is a mitochondrial   matrix enzyme whereas the other enzymes of gluconeogenesis are situated outside the mitochondrion. Thus oxaloacetate are produced by p

Reptiles, biting mechanism in snakes

biting mechanism in snakes

Transport in plants, Osmosis and transpiration both play a part in the move...

Osmosis and transpiration both play a part in the movement of water through a plant. Which of these two processes makes the greater contribution to the movement of water up the t

Define behaviour modification - combat from obesity problem, Define Behavio...

Define Behaviour modification - combat from obesity Problem? It is very important. A heavy parental hand and parent attitude and behaviours towards child's eating, interferes i

Why is it significant that exact copies of dna, Why is it significant that ...

Why is it significant that exact copies of DNA are produced during replication? Producing exact copies make sure that when a cell divides, the offspring cells will receive the

Objective of nutrient needs during periods of pregnancy, Define Objective o...

Define Objective of nutrient needs during periods of pregnancy? describe the various physiological changes during pregnancy, describe foetal growth and development and

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