Physical factors {environmental factor} can directly affect organism growth: temperature, light, water, dissolved gases, trace elements, water flow, soil acidity, soil porosity, soil depth, fire hazard, and organic nutrients. Tropical plants have high carbohydrate percentage.
land
Light, temperature, and rainfall are important land environmental factors.
water
Light, temperature, and salinity are important ocean environmental factors. Oxygen content is important environmental factor in fresh water.
temperature
Growth is typically faster with varying temperature. Water has less temperature variation than land or air.
light
Ultraviolet light kills unprotected cells, so organisms must filter light. Sunlight inhibits protein synthesis.
Organism absence from environments or failure to live in new environments depends on limiting environmental factors organism can tolerate {Shelford's law of tolerance} {Shelford law of tolerance}.
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Date Modified: 2022.0225