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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.
What else can I help you with?
What evidence exists that there has been an increase in the amount of CO2 present in the atmosphere in the last century?
Evidence of increased atmospheric CO2 levels over the last century includes direct measurements from the Mauna Loa Observatory, which began in 1958 and shows a consistent upward trend. Ice core data also reveal historical CO2 concentrations, indicating that current levels exceed those of the past 800,000 years. Additionally, satellite observations and global carbon cycle studies confirm rising CO2 levels linked to human activities, particularly fossil fuel combustion and deforestation. These findings collectively demonstrate a significant increase in atmospheric CO2 concentrations.
Have scientists discovered a germ on mars?
No. Scientists have discovered fossil evidence that mightindicate that there were, at one time long ago, bacteria on Mars. However, the evidence is sketchy; not all scientists agree that the fossils are in fact evidence of life.
Scientists need to be skeptical so that they can?
Scientists need to be skeptical in order to question assumptions, critically evaluate evidence, and ensure the validity and reliability of their findings. By being skeptical, scientists can avoid bias, uncover errors, and make more accurate conclusions based on empirical evidence.
Do scientists base their explanations of the natural world on evidence or belief why?
They have evidence, but if they cant prove something, even with the evidence, it becomes a theroy, or belief. So sometimes it is based on evidence and fact, sometimes on belief.
Which plant are found in lake bottoms provides scientists with evidence about ancient climates?
pollen
With evidence which indicates increases in atmospheric concentrations of oxides of sulfur and nitrogen?
ice core samples
Which evidence did Ottawa scientists collect in researching PCB concentrations in Alaska?
The evidence that Ottawa scientists collected in researching PCB concentrations in Alaska was that salmon were responsible for high levels of PCB. Salmon head to Alaska to spawn and the lakes with the most salmon have the highest levels of PCB.
How do forensic scientists use titration?
Forensic scientists may use titration to analyze chemical compounds found at crime scenes, such as drugs or poisons. By titrating a known substance with an unknown substance, they can determine the concentration or identity of the unknown substance. This information can then be used as evidence in criminal investigations.
How do scientists get empirical evidence?
i know that this is stupid but how do scientists get empirical evidence.
A variety of sunset colors is evidence for a variety of?
A variety of sunset colors is evidence for a variety of atmospheric conditions, such as the presence of different sized particles and gases in the air. These conditions affect how sunlight is scattered, leading to the colorful display we see during sunsets.
How did the scientists revolution change the way scientists did their work?
They relied more on evidence.
How do you use empirical evidence in a sentence?
the scientists had empirical evidence waiting to be answered
Where did scientist find evidence about rodinia?
Scientists found evidence in Rodinia in Antartica.
What has the author Steven Goode written?
Steven Goode has written: 'Courtroom handbook on federal evidence' 'Goode's Sum and Substance Audio Set on Evidence, 2d' 'Sum & Substance Quick Review on Evidence' 'Courtroom evidence handbook' -- subject(s): Trial practice, Evidence (Law), Court rules 'Evidence Sum and Substance'
Do scientists had an evidence about the end of th world?
no :)
What evidence do scientists use to study the ancient dinosaur?
Scientists use mainly fossils.
What evidence exists that there has been an increase in the amount of CO2 present in the atmosphere in the last century?
Evidence of increased atmospheric CO2 levels over the last century includes direct measurements from the Mauna Loa Observatory, which began in 1958 and shows a consistent upward trend. Ice core data also reveal historical CO2 concentrations, indicating that current levels exceed those of the past 800,000 years. Additionally, satellite observations and global carbon cycle studies confirm rising CO2 levels linked to human activities, particularly fossil fuel combustion and deforestation. These findings collectively demonstrate a significant increase in atmospheric CO2 concentrations.
