Physical Factors: Temperature, Moisture and Light

Abiotic and Biotic Factors

Examples of Abiotic Factors

Examples of Biotic Factors

Biotic and Abiotic Factors Interact

Organism Responses to Environmental Factors

Variation in tolerance-responses


Temperature Variation

Temperature and Metabolism

Temperature and Population Distribution



Temperature and Moisture

Water Loss and Desiccation

Properties of Water

Water and Salt Concentration in Aquatic Environments


Solar and Longwave Radiation

Properties of Light


Physical Factors and Energy Balance