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Some scientists, University of Chicago oceanographer David Archer and Ken Caldeira of the Carnegie Institution for Science in Stanford, California, are showing studies that say CO2 levels will remain in the atmosphere for a few centuries, "plus 25 percent that lasts essentially forever".

"The climatic impacts of releasing fossil fuel CO2 to the atmosphere will last longer than Stonehenge," Archer writes. "Longer than time capsules, longer than nuclear waste, far longer than the age of human civilization so far."

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How have scientists obtained evidence of the changes of Atmospheric substance concentrations over the past 300 years?

For starters, Ice Scientists have taken Ice Samples from literally thousands of locations all over Earth's surface. Surprise! They each and all 'go back' not hundreds but many hundreds of thousands of Years. Yes, we possess a complete Record of Our Earth's Past [eventual] History! Many other Means-of-Analysis derive from these Ice Core Samples - most notably Gas Chromatography.


How many hundreds are in 385?

There are 3 hundreds in 385. To determine this, you look at the hundreds place, which is the digit 3 in 385. This digit represents the number of hundreds in the given number.


Did the proportion of the amount of dissolved salts in seawater greatly increased over hundreds of millions of years?

The proportion of dissolved salts in seawater has remained relatively stable over millions of years. It is primarily maintained through a balance of inputs from sources like rivers and outputs through processes like evaporation.


Can asteroids be hundreds of kilometers wide?

Yes. There are some asteroids that are hundreds of kilometers in diameter.


Which items are biodegradable out of a plastic bag aluminum foil saran wrap parchment paper and paper?

Biodegradable means that it will degrade or rot biologically i.e. in presence of water and air, it will eventually breakup in to simpler organic compounds such as CO2, CH4 etc. and mix with atmospheric air. Metals have different kind of reactions with atmospheric ingredients and form compounds. Most of plastics are not biodegradable. Most grades of papers are biodegradable.

Related Questions

What took place at some of the concentration camps during the holocaust?

Some Concentration Camps were used as Death Camps, gassing and cremating hundreds of victims at a time.


Who was the first victim of Nazi concentration camps?

Hundreds and hundreds of Jews were in each camp at once. They were slaughtered like cattle. There records couldn't hold up with exterminations.


Addition: ::subtraction:?

you have to do column addition or subtraction putting it in the right column thousand column,hundreds column,tens column or ones as we call it unis


Scientists are able to accurately determine the atmospheric composition from thousands to hundreds of thousands of years ago by what means?

analysing cores of ice and rock formations


What happened on Vancouver island in 1858?

A steamship docked in Victoria with hundreds of gold miners. The population of the Island increased dramatically after that.


Who was the only occupant to survive concentration caps during the holocaust?

There were many who survived, obviously the vast proportion died, but the survivors numbered in the hundreds of thousands.


What is the name of the concentration camps during the Holocaust?

There were hundreds of concentration camps, extermination camps, ghettos and holding places. So I have added some related links below that have the lists and other important information for you. On one site you need to type in concentration camps in the box labeled "articles" and hit the search button.


What is tattooed on Eva Schloss' arm from the concentration camp?

the number tatooed on her arm is A/5272. It was changed from A/5232 as one of the Kappos made an error and hundreds had to be retatooed.


What is 987 in expanded notation as an addition expression?

987 in expanded notation as an addition expression would be 900 + 80 + 7. This is because each digit is represented by its place value, with the hundreds digit in the hundreds place, the tens digit in the tens place, and the ones digit in the ones place. Adding these together gives us 987.


Describe three Nazi practices during the war that the allies condemned as atrocities?

the biggest is the extermination of a race/religion their main goal was to exterminate Jews. Another is concentration camps. they were hell on earth. hundreds of people died each day in concentration camps.


What are the scales of atmospheric motion?

The scales of atmospheric motion range from microscale (meters to kilometers) to synoptic scale (hundreds to thousands of kilometers) to planetary scale (thousands of kilometers to the entire globe). These scales describe the size of weather systems and the range of phenomena they encompass.


What are the pros and cons of the invention of the car?

There are multiple positives and negatives behind the advent and use of the passenger car and light truck. The pros are that they serve as a driving force behind economies and progress, in addition to creating freedom and autonomy of movement for hundreds of millions daily. The negatives include atmospheric carbon emissions due to the widespread use of petroleum and natural gas products rather than renewable sources such as electric.