Final answer:
The concentration of carbon dioxide in the atmosphere has increased significantly due to human activities since the Industrial Revolution. Today, it has reached around 420 ppm, about a 50% increase. The increase in CO2 is linked to global warming and climate change.
Step-by-step explanation:
The concentration of carbon dioxide (CO2) in the atmosphere has increased significantly since the Industrial Revolution, mainly as a result of human activities such as burning fossil fuels. Prior to the Industrial Revolution, the concentration of CO2 was around 280 parts per million (ppm). Today, it has reached around 420 ppm, which is about a 50% increase.
This increase can be measured and monitored using various methods, including ice core data, direct measurements from monitoring stations, and satellite observations. The increase in CO2 has been linked to global warming and climate change, as CO2 is a greenhouse gas that traps heat in the atmosphere.
Based on these observations and measurements, scientists have reached the conclusion that human activities are the primary cause of the increase in atmospheric CO2 concentrations.
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