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What does the atmosphere shield us from?
The atmosphere protects life on Earth by absorbing ultraviolet solar radiation, warming the surface through heat retention (greenhouse effect), and reducing temperature extremes between day and night.
If a meteorite contains no traces of carbon can it be concluded there is life at the meteorite's origin?
No. The best element for building life is carbon. As we know there is no life form that would be able to endure cosmic void and heat produced when a metorite is flying through atmosphere. There is a high probability that a life form (regerdless if carbon or some other element based) in the meteorite would burn without leaving traces on it.
Which sphere is important for human life?
atmosphere
What layer of the atmosphere does life exist?
The troposphere is the only layer where life can exist
What best explains why there is life on earth but not on the moon?
The moon has no atmosphere to support life.
Is planet mercury is the atmosphere conductive to live?
Mercury has no Atmosphere and is very hot facing the Sun and very Cold facing away from the Sun. Not conducive to life as we know it.
Do we need global warming?
No, we don't. The earth has had an atmosphere conducive to human and animal life for millions of years. Global Warming is threatening to put an end to all life on earth if it is not stopped.
How did earths atsmophere change during the precambrian time?
It changed from a reducing atmosphere containing no free oxygen to an atmosphere containing oxygen. The evolution of life on Earth "terraformed" the planet.
What environments are conducive to a herding way of life?
Steppes
Why might titan hold the key to learning more about the origin of life?
because titan's atmosphere is much like earth's, scientists hope that studying titan and its atmosphere, it can tell them more about how life began on earth.
Does reducing the size of your footprint necessarily mean reducing your quality of life?
No, we can still have a quality of life but by reducing your footprint will better your life.
What does the atmosphere shield us from?
The atmosphere protects life on Earth by absorbing ultraviolet solar radiation, warming the surface through heat retention (greenhouse effect), and reducing temperature extremes between day and night.
How has geography affected Canada's development?
There are areas in Canada that are not really conducive to human life. For this reason, they are not heavily populated and unsettled.
Was the atmosphere of the earth always mostly nitrogen and oxygen?
No, the Nitrogen in the air has probably always been there (because nitrogen is rather inert), but originally Earths atmosphere was reducing (it had no free Oxygen) and probably contained large amounts of CO2 and hydrocarbons. The present atmosphere on Earth is the product of biological processes which have slowly introduced free Oxygen into the Oceans and then the atmosphere - life made Earth habitable for life!
Is pollution a thing?
This is one of those "it depends" answers. As an example, the Earth's atmosphere was initially a reducing atmosphere. All life on Earth required no oxygen. Then oxygen producers were evolved changed the atmosphere (polluting it) and killing off the anaerobic life and allowing the aerobes (eventually us) to evolve. bad for the anaerobes and good for us. In general pollution is seen as a bad thing when it adversely affects the life we value.
Life in 1750?
Yes, there was quite a lot of life in 1750, except in places that aren't conducive to life such as the core of volcanoes, etc.
Is pollution a bad thing?
This is one of those "it depends" answers. As an example, the Earth's atmosphere was initially a reducing atmosphere. All life on Earth required no oxygen. Then oxygen producers were evolved changed the atmosphere (polluting it) and killing off the anaerobic life and allowing the aerobes (eventually us) to evolve. bad for the anaerobes and good for us. In general pollution is seen as a bad thing when it adversely affects the life we value.
