Üldökoloogia kordamisküsimuste vastused
dependent on the incidence of solar radiation. The latitudinal and longitudinal spatial variation
of temperature greatly affects climates and consequently the distribution ofbiodiversity and levels of
primary production in different ecosystems or biomes across the planet. Heat and temperature relate
importantly to metabolic activity. Poikilotherms, for example, have a body temperature that is largely
regulated and dependent on the temperature of the external environment. In
contrast, homeotherms regulate their internal body temperature by expending metabolic energy. [2][86]
[157]
There is a relationship between light, primary production, and ecological energy budgets. Sunlight is
the primary input of energy into the planet's ecosystems. Light is composed of electromagnetic
energyof different wavelengths. Radiant energy from the sun generates heat, provides photons of light
measured as active energy in the chemical reactions of life, and also acts as a catalyst for genetic
mutation
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