GEOLOGY

Detailed explanation-1: -The amount had almost quadrupled by 1990, reaching a rate of over 22 billion tonnes per year. Currently, the world emits over 34 billion tonnes of CO₂ each year. Since 1751, the world has emitted over 1.5 trillion tonnes of CO₂ cumulatively. The world currently emits over 34 billion tonnes of CO₂ each year.

Detailed explanation-2: -“Anthropogenic greenhouse gas emissions have increased since the pre-industrial era, driven largely by economic and population growth, and are now higher than ever. This has led to atmospheric concentrations of carbon dioxide, methane and nitrous oxide that are unprecedented in at least the last 800, 000 years.

Detailed explanation-3: -Carbon dioxide concentrations are rising mostly because of the fossil fuels that people are burning for energy. Fossil fuels like coal and oil contain carbon that plants pulled out of the atmosphere through photosynthesis over many millions of years; we are returning that carbon to the atmosphere in just a few hundred.

Detailed explanation-4: -Human Activity Is the Cause of Increased Greenhouse Gas Concentrations. Over the last century, burning of fossil fuels like coal and oil has increased the concentration of atmospheric carbon dioxide (CO2). This increase happens because the coal or oil burning process combines carbon with oxygen in the air to make CO2.

Detailed explanation-5: -The increase in carbon dioxide levels from 2020 to 2021 was larger than the average annual growth rate over the last decade. Measurements from WMO’s Global Atmosphere Watch network stations show that these levels continues to rise in 2022 over the whole globe.