environmental

## What I do - Study natural systems and environmental processes - Analyze environmental impacts and solutions - Assess pollution and contamination - Research climate change effects - Evaluate sustainability practices - Develop environmental management strategies ## When to use me - When studying environmental systems - When assessing environmental impacts - When developing sustainability strategies - When analyzing pollution sources - When studying climate change - When preparing environmental assessments ## Key Concepts ### Environmental Systems **Atmosphere** - Composition: N₂ (78%), O₂ (21%), Ar (0.9%) - Layers: Troposphere, stratosphere, mesosphere, thermosphere - Greenhouse effect - Ozone layer **Hydrosphere** - Water distribution: 97% oceans, 3% freshwater - Water cycle: Evaporation, precipitation, runoff - Ocean chemistry: Salinity, pH, currents **Lithosphere** - Rock cycle - Soil formation - Mineral resources ### Environmental Issues - Climate change - Air pollution - Water pollution - Deforestation - Biodiversity loss - Waste management ### Sustainability Principles ```python # Example: Carbon footprint calculation def carbon_footprint(energy_use, emission_factor): """ Calculate CO2 emissions. energy_use: kWh or liters emission_factor: kg CO2 per unit """ return energy_use * emission_factor # Common emission factors emission_factors = { 'electricity': 0.5, # kg CO2/kWh 'gasoline': 2.3, # kg CO2/liter 'diesel': 2.7 # kg CO2/liter } ```