The percentage of atmospheric carbon dioxide must be low (below 1) for life to exist
True
True
False
False
To determine whether the statement is true or false, we need to verify scientific information about the percentage of atmospheric carbon dioxide necessary for life to exist.
To do this, we can rely on scientific research and consensus. The current scientific understanding is that the natural concentration of atmospheric carbon dioxide is approximately 0.04% (as of 2021), which is equivalent to 400 parts per million (ppm). This means that for every million molecules in the atmosphere, approximately 400 of them are carbon dioxide.
Life on Earth has evolved and existed for billions of years under varying atmospheric carbon dioxide levels. While it is true that extremely high concentrations of carbon dioxide can have adverse effects on certain forms of life, the statement suggesting that the percentage of atmospheric carbon dioxide must be low (below 1) for life to exist is false.
Therefore, the correct answer is:
False