Why is reaching 450 ppm of CO2 levels in the atmosphere a concern for our enviroment?
The subsequent warming is already causing changes to the planet — shrinking glaciers, bleaching coral reefs and intensifying heat waves and storms, among other impacts. And carbon dioxide levels higher than 450 ppm “are likely to lock in dangerous and irreversible changes in our climate,” Mann told Live Science.
What factors do you think could cause the CO2 levels to increase?
On Earth, human activities are changing the natural greenhouse. Over the last century the burning of fossil fuels like coal and oil has increased the concentration of atmospheric carbon dioxide (CO2). This happens because the coal or oil burning process combines carbon with oxygen in the air to make CO2.
What do you believe is a safe upper level to cap c02 at in ppm?
Countless scientists, climate experts, and governments officials agree that 350 ppm is the “safe” level of carbon dioxide.
Why does the atmospheric concentration of CO2 vary over the course of a year?
The amount of CO2 found in the atmosphere varies over the course of a year. Much of this variation happens because of the role of plants in the carbon cycle. Respiration occurs all the time, but dominates during the colder months of the year, resulting in higher CO2 levels in the atmosphere during those months.
How do you ensure a balance of carbon dioxide and oxygen in the air?
The balance of oxygen and carbondioxide is maintained in the atmosphere by the oxygen released by plants during photosynthesis and carbondioxide released by human,animals etc. in the atmosphere. The balance of oxygen and carbondioxide is made due to respreration and photosinthesis.
What is safe level of CO2?
5,000 parts per million
OSHA has established a Permissible Exposure Limit (PEL) for CO2 of 5,000 parts per million (ppm) (0.5\% CO2 in air) averaged over an 8-hour work day (time-weighted average orTWA.)