Greenhouse ◎

: Without significant changes, emissions could rise 50% by 2050, potentially warming the planet by by 2100 [14, 19]. Summary Table: Comparison Physical Greenhouse Atmospheric Greenhouse Effect Primary Barrier Glass or plastic walls/roof [10, 15] Greenhouse gases in the atmosphere [3, 10] Main Mechanism Blocks convection (prevents air movement) [35] Restricts radiative transfer (traps heat) [16, 35] Purpose/Result Plant cultivation in cold climates [15] Maintains planetary habitability [5, 22] Current Challenge Resource efficiency (water/energy) [12] Excessive warming (Climate Change) [17, 31]

: Increased frequency and severity of heatwaves, storms, and droughts [21, 31, 39]. greenhouse

While the natural greenhouse effect is beneficial, human activity since the Industrial Revolution has increased GHG concentrations to unprecedented levels, leading to [3, 17, 26]. : Without significant changes, emissions could rise 50%

: A rigid plastic that provides better insulation than single-pane glass [15]. : A rigid plastic that provides better insulation

: The United Nations identifies several critical impacts:

) : The most abundant natural GHG, acting as a "feedback" that amplifies warming [1, 5, 20]. Carbon Dioxide ( CO2cap C cap O sub 2

) : Emitted from agricultural and industrial activities [5, 27].