Sentences with phrase «oxygenated atmosphere»

Therefore, these biomarkers are evidence of both eukaryotic life and an oxygenated atmosphere.

Regarding the possible role hydrogen sulfide in the major extinctions you might want to check out another book, one which places it in the context of the methane clathrate gun, the destruction of the coccolithophores which help to maintain an oxygenated atmosphere by ocean acidification, the role of algae blooms, etc...

These whiffs of oxygen likely happened in the following 100 million years, changing the levels of oxygen in Earth's atmosphere until enough accumulated to create a permanently oxygenated atmosphere around 2.4 billion years ago — a transition widely known as the Great Oxidation Event.

«Most life elsewhere is probably simple — like microbes — and most planets have probably not advanced to a stage of an oxygenated atmosphere.

Science --------- — Big bang (13.8 BYA)-- Star ignition (sun 4.57 BYA)-- Planetary accretion — Earth (4.54 BYA)-- Moon (4.53 BYA)-- Bombardment — Surface Water, toxic atmosphere — Simple vegetation — Oxygenated atmosphere — Aquatic life — Land animals — Birds — Mammals

It was microbial life that oxygenated the atmosphere.

Science ============= — Big bang (13.8 BYA)-- Star ignition (sun 4.57 BYA)-- Planetary accretion — Earth (4.54 BYA)-- Moon (4.53 BYA)-- Bombardment — Surface Water, toxic atmosphere — Simple vegetation — Oxygenated atmosphere — Aquatic life — Land animals — Birds — Mammals

Cyanobacteria changed the face of the Earth irreversibly since they were responsible for oxygenating the atmosphere.

Cyanobacteria also were a planet - scale force, oxygenating the atmosphere some two billion years ago.

Not exact matches

«New answer to why Earth's atmosphere became oxygenated.»

But it's important to note that this idea represents a departure in our understanding for how planetary atmospheres might become oxygenated.»

Some atmospheric VOCs combine with oxygen to form tiny airborne particles called oxygenated VOCs (oVOCs), which insulate the atmosphere and lead to warming.

After all green plants and plankton oxygenated the early atmosphere of Earth, creating an environment that allowed new life forms to emerge.

This would have enormous implication for subsequent evolution as earth's oceans atmosphere were oxygenated by photosynthetic bacteria creating extensive stromatolitic reefs.

One possible explanation is that perhaps oxygen levels during that time period fluctuated greatly creating a «yo yo» atmosphere: Going from oxygenless before 3 billion years ago to oxygenated between 3 billion and 2.75 billion years ago and then back to oxygenless from 2.75 billion to 2.4 billion years ago.

Traversing subway tunnels and abandoned buildings while struggling to stay alive and oxygenated (the atmosphere is toxic) provides a heart - pounding gameplay loop that landed the title on many «best of» lists at the time of its original release.

Cyanobacteria are one of the oldest and most successful forms of life on Earth and are thought to be responsible for oxygenating the early atmosphere and helping to create the conditions for diverse life to flourish.

Our results indicate that carbon dioxide was an important greenhouse gas during periods of lower solar luminosity, probably dominating over methane after the atmosphere and hydrosphere became pervasively oxygenated between 2 and 2.2 gigayears ago.