Sentences with phrase «terrestrial life»

Many biologists, intent upon scientific objectivity, are reluctant to see in the development of terrestrial life anything more than an unlimited proliferation of forms, all on the same level.

Extra terrestrial life just became that much more of a possibility.

Since life uses the left - handed versions, this suggests terrestrial life as the source of these amino acids.

Without land plants, the most complex terrestrial life would most likely be a microbial crust.

I'm not a biologist, but everything I think of as terrestrial life produces a waste product.

The building blocks of terrestrial life, including proteins and DNA, are composed mainly of carbon, along with hydrogen, oxygen and nitrogen.

Man, like all other forms of terrestrial life from which he has evolved, is a physical mortal creature, whose life is lived within those limits of space and time to which his creatureliness subjects him.

«If there is an indigenous Mars biota, it's at risk of being contaminated by terrestrial life,» Melosh said in a statement.

Researchers found that although terrestrial living things absorb more CO2 every year than what they are producing, they are still a net source of nitrous oxide and methane.

Although perchlorate is nasty enough that it's recommended not to exceed 25 parts per billion in U.S. drinking water, it's not a big deal for most terrestrial life, Phoenix scientists said.

The remaining 10 % of the water that is transportedon to land sustains terrestrial life and human society.

Not that actual, provable science means anything to those determined to believe what they WANT to believe instead of actual facts... but it's looking more and more like the building blocks of terrestrial life fell from the sky..

To an observer unaware of what it signifies, the event might at first seem to have little importance; but in fact it represents the complete resurgence of terrestrial life upon itself.

Terrestrial life existed, therefore there was fresh water.

As to whether intelligent alien life exists, certainly Holloway found that idea «thrilling» but there is already more than enough to consider concerning terrestrial life, its evolution and the nature of the human self to warrant its discussion here.

And, after all, the book of Genesis essentially predicted our dominion over terrestrial life.

Terrestrial life probably could not get going until the Late Heavy Bombardment died down about 3.8 billion years ago.

A better understanding of the structure of Earth's inner core would clarify its role in locking the planet's magnetic field in its north - south position, which has the effect of insulating terrestrial life from a lethal bombardment of cosmic rays.

That is essentially true for any missions studying Phobos - Grunt's landing site with on - board instruments, says Catharine Conley, NASA's planetary protection officer, who is charged with ensuring that agency projects do not contaminate other solar system bodies with terrestrial life.

Terrestrial life uses the left - handed versions, while non-biological chemistry produces the left - handed and right - handed varieties in equal amounts.

One well - known model for the beginnings of life on Earth posits that terrestrial life sprang from complex molecules such as amino acids and sugars produced by electrical discharges in a primeval atmosphere replete with gases such as methane, hydrogen, ammonia and water.

All forms of terrestrial life require water, and while it is possible that life could evolve without the precious liquid, it is easier to search for conditions that are known to be optimal, rather than conditions we suppose could be.»

The view of terrestrial life sub specie aeternitatis («under the aspect of eternity») is a philosophical ideal made commonplace by flight and satellite imagery, yet it remains persistently transcendent.

The will to survive has become the right to survive, a right whose abuse has made startlingly clear the fragile parameters governing terrestrial life.

Invisible Landscapes calls attention to unnoticed terrestrial life forms while realizing new artificial ones.

The topsoil — the fertile mix of loam, rock dust, minerals, partly decomposed wood, straw and leaf litter, fungi, bacteria, invertebrates and moisture from which all of terrestrial life derives its nourishment — remains one of the great unexplored economies of the planet.

Terrestrial life evolved around an ocean that outgasses CO2 as it warms and takes it up as it cools.

I believe in «aliens», ie the existence of extra terrestrial life SOMEWHERE in the universe.

On the far side of the gap, named after Alfred Romer, the Harvard University researcher who first noticed it, tetrapods are rare and ill - adapted for terrestrial living.

Although terrestrial life is based on carbon, the element makes up precious little of the Earth's crust.

Oxygen is an important part of the atmosphere, and is necessary to sustain most terrestrial life as it is used in respiration.

NASA, for example, has already had to cancel its SETI programme to detect extra terrestrial life, and trim back its plans for a space station.

If Donoghue's results are right, «This changes the entire timeline for the origin of terrestrial life and the subsequent pace of evolutionary change in plants and associated animal (and fungal) groups,» says Pamela Soltis, a plant evolutionary biologist at the University of Florida in Gainesville.

To warrant this radical revision — one might almost say reversal — of the Catholic tradition, Father Concetti and others explain that the Church from biblical times until our own day has failed to perceive the true significance of the image of God in man, which implies that even the terrestrial life of each individual person is sacred and inviolable.

If the quality of terrestrial life is to attain a level which makes it worth the effort of living it, this achievement is possible only in terms of the practice of relational power.

All terrestrial life forms share the same 20 amino acids.

Which brings us back to the big mystery motivating Simonson's research: What did those disruptive extraterrestrial visitors do to terrestrial life?

Perhaps the most notable aspect of Hörst's experiment is what she left out: liquid water, which is crucial for terrestrial life but absent from most of the cosmos, including Titan.

At the American Physical Society meeting in March scientists reported that our makeup of complex molecules based on carbon and hydrogen is no fluke and that precursors to terrestrial life's distinctive chemistry apparently abound in distant space.

The basic ingredients for terrestrial life — a couple dozen simple molecules, including water — are now known to be abundant in the galactic clouds where stars are born.

A new study by Chinese and American biologists shows that if the calamity had not wiped the planet clean of most terrestrial life 66 million years ago, 88 percent of today's frog species wouldn't be here.

The red giant will eventually cast off its entire carbon - rich envelope, leaving behind only a small, hot core, while its lost material spreads into space, ready to enrich planets that have yet to be born with the key element on which all terrestrial life is based.

What Pleistocene humans did in 1,500 years to terrestrial life, modern man has done in mere decades to the oceans — «almost,» Jackson says.

Since crustaceans do not have olfactory receptors, previously scientists assumed that these receptors evolved as an adaptation of prehistoric insects to a terrestrial life.