Sentences with phrase «percent oxygen atmosphere»

The Rho - kinase inhibition stimuli under low oxygen conditions (of 5 percent oxygen atmosphere), which is a condition corresponding to conditions in the body's cartilage, produced a more effective increase in chondrocyte - specific gene expression and synthesis of extracellular matrix components by HCS - 2 / 8 cells.

Not exact matches

The atmosphere consists primarily of 78 percent nitrogen, 21 percent oxygen, a highly variable smattering of water vapor, and trace amounts of argon, carbon dioxide, and other gases.

Our own atmosphere is 20 percent oxygen by volume.

If you heard an announcement that we're about 95 percent sure that some planet seems to have a substantial amount of oxygen in the atmosphere, so life is probably there — I'd be blown away by that sort of thing.

Nitrogen, oxygen and argon together comprise more than 99 percent of the atmosphere.

At the beginning of this time period, the atmosphere contained only 10 percent oxygen by volume.

Around 50 million years ago, in contrast, oxygen levels in the atmosphere measured 23 percent — 2 percent higher than today.

Cyanobacteria: Such tiny organisms produced today's proportion of about 20 percent oxygen in the atmosphere of the earth.

Today, some 20 percent of Earth's atmosphere is free molecular oxygen, or O2.

Ocean microbes produce at least fifty percent of the oxygen in our atmosphere while removing large amounts of carbon dioxide.

Some simple organisms like bacteria can survive without oxygen, but all higher organisms need oxygen and Earth's biology would probably be a poor sight, if the atmosphere did not contain the 21 percent oxygen, which is essential for the human brain to function, for example.

With an atmosphere of much less than one percent oxygen, scientists have presumed that there were things living in deep water in the mud that didn't need sunlight or oxygen, but Czaja says experts didn't have any direct evidence for them until now.

The bacteria produce 20 percent of the planet's oxygen and also consume carbon dioxide from the atmosphere.

oxygen A gas that makes up about 21 percent of Earth's atmosphere.

Its atmosphere is 95 percent CO2, compared with Earth's 78 percent nitrogen and 21 percent oxygen, with trace amounts of other gases and water vapor.

The human body needs oxygen to survive, but the earth's atmosphere only contains about 20 to 22 percent oxygen in the atmosphere.

By burning great quantities of fuel with oxygen from the atmosphere we have raised the content of carbon dioxide by several percent in the period for which there are records.

@Jimbo — If you really want to put it in perspective, until about 2 to 1-1/2 billion years ago, before photosynthesis by blue - green algae converted almost all of it to oxygen, the Earth's primordial atmosphere was about 20 percent CO2, about the same percentage as oxygen is today, and the Earth certainly didn't burn up them even with 500 times as much CO2 in the air as there is today.

The oxygen is vented into the atmosphere, which already contains about 20 percent O2.

how would we do if the atmosphere dropped to 15 percent oxygen instead of 20 percent?

The main constituents of the atmosphere, nitrogen (77 percent) and oxygen (21 percent) play no part in the greenhouse effect.

By the way, it is worth remembering that ~ 70 percent of the oxygen present today in the atmosphere comes from phytoplankton, not trees.

In a domino effect, chain reaction, the death of the coral reefs will also be the death of the sea life that depend on the reef for survival, eventually killing the ocean which supplies about 85 percent of the oxygen in the earth's atmosphere.