ATMOSPHERE The Earth's atmosphere is a dynamic blanket of gases crucial for life. Comprising nitrogen,oxygen, and trace gases like carbon dioxide, it shields us from harmful solar radiation while regulating temperature. Divided into layers— troposphere, stratosphere, mesosphere, thermosphere, and exosphere—it facilitates weather patterns, sustains life, and enables vital processes like photosynthesis. Human activities impact its composition, leading to concerns like climate change and pollution, emphasizing the need for sustainable practices to preserve this delicate balance.