Air: Composition, Properties, Life Role, Uses, Pollution, and History Air Air is the gaseous envelope around Earth that supports life, shapes weather, enables technologies, and is subject to pollution and climate change. Overview of composition, properti…
Earth — the third planet from the Sun Earth Earth is the third planet from the Sun, the only known world to support life, with abundant surface water, a layered interior, and a complex biosphere shaped over billions of years…
Rock cycle: how Earth's rocks form, change, and interact Rock cycle Overview of the rock cycle: the processes that transform igneous, sedimentary and metamorphic rocks; main mechanisms, environments, timescales, and why the cycle matters for landsc…
