How can governments regulate emissions from different sectors of the economy?

CO2 accounts for about 76 percent of total greenhouse gas emissions. Methane ... The top 7 emitters are responsible for nearly two-thirds of global greenhouse gas ... Jun 14, 2021 ... The study found CO2 levels of more 1500 parts per million (ppm) in the atmosphere associated with extreme global warmth 50 million years ago, a ... Jun 16, 2011 ... ... atmosphere while about 45 percent has stayed in the atmosphere. Eventually, the land and oceans will take up most of the extra carbon dioxide ... The enhancement of the CO2 mole fraction in the atmosphere over pre-industrial is expressed both as ppm and as a percentage change since the year 1800. Data ... Jan 2, 2023 ... Some researchers believe that approximately 0.045% by volume is the maximum more or less acceptable concentration of CO2 in the atmosphere. Aug 12, 2020 ... At the time, atmospheric CO2 concentration was at a whopping 3000 to 9000 ppm! The average temperature wasn't much more than 10 degrees C above ... At 150 PPM the plants begin to respire, and photosynthesis is stopped. At this low level the plant will no longer be able to obtain CO2 from the atmosphere and ... Oct 21, 2024 ... It represents the largest carbon exchange between land and atmosphere on the planet. GPP is typically cited in petagrams of carbon per year. One ... Problem 1 - In the graph, what was the concentration of carbon dioxide in 2005? Problem 2 - What percentage of Earth's atmosphere, by volume, was carbon dioxide. These studies suggest that approximately 95% of atmospheric CO2 is natural.