Question

Why are greenhouse gases a matter of deep concern?

Answer 1

Greenhouse gases are a matter of deep concern because they trap heat in Earth’s lower atmosphere, the “greenhouse effect,” and human activities have raised their concentrations enough to warm the planet, disrupt climate systems, and amplify extreme weather. This warming is already melting glaciers and ice, raising sea levels, and shifting rainfall patterns, so some regions face heavier floods while others face more frequent droughts and wildfires, with attendant losses of crops, freshwater, and coastal land. Because carbon dioxide, methane, and other greenhouse gases come largely from burning fossil fuels, deforestation, and certain agricultural and industrial practices, continued emissions lock in long-term changes that increase heat waves, spread disease, damage ecosystems (including coral reefs and glaciers), and impose high social and economic costs worldwide.