Isobars have different: MCQ with Answer and Explanation

Explanation:
Global warming is the long-term rise in Earth's average temperature, primarily caused by the increased concentration of greenhouse gases (like CO₂, CH₄, N₂O) in the atmosphere. These gases trap outgoing infrared radiation, enhancing the natural greenhouse effect and leading to climate change.

Explanation:
The stratospheric ozone layer absorbs the majority of the sun's harmful ultraviolet (UV-B and UV-C) radiation, preventing it from reaching Earth's surface. UV can cause skin cancer, cataracts, and damage to ecosystems. Ozone depletion is caused by CFCs (chlorofluorocarbons). Infrared is associated with heat, visible light is mostly harmless, radio waves are not absorbed by ozone.

Explanation:
Reverse osmosis (RO) uses pressure to force water through a membrane that blocks dissolved salts and impurities. Distillation uses boiling/condensation. Chlorination and ozonation are disinfection methods, not for desalination.