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प्रश्न
What is primary productivity?
उत्तर
Primary productivity:
Primary productivity is the rate of generation of biomass in an ecosystem that is expressed in units of mass per unit surface (or volume) per unit time i.e. g/m2/day.
The mass unit may relate to dry matter or to the mass of carbon generated.
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संबंधित प्रश्न
Define the following term and give one example:
Parasitism
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(a) excessive cutting down of forest plants and trees
(b) excessive killing of large herbivores
(c) excessive killing of large carnivores
(d) excessive use of poisonous chemicals herbicides
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Explain the following term
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