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

# 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
}