define productivity ?What is primary productivity ?Give breifly description of factors that affect primary productivity ?6 mrks ques plz length long ?
Answers
A measure of the efficiency of a person, machine, factory, system, etc., in converting inputs into useful outputs. Productivity is computed by dividing average output per period by the total costs incurred or resources (capital, energy, material, personnel) consumed in that period.
Primary production is the production of chemical energy in organic compounds by living organisms. The main source of this energy is sunlight but a minute fraction of primary production is driven by lithotrophic organisms using the chemical energy of inorganic molecules.
Primary productivity of an ecosystem depends on the variety of environmental factors such as light, temperature, water, precipitation, etc. It also depends on the availability of nutrients and the availability of plants to carry out photosynthesis.
The quality, state, or fact of being able to generate, create, enhance, or bring forth goods and services
Primary productivity
In ecology, primary production is the synthesis of organic compounds from atmospheric or aqueous carbon dioxide. It principally occurs through the process of photosynthesis, which uses light as its source of energy, but it also occurs through chemosynthesis, which uses the oxidation or reduction of inorganic chemical compounds as its source of energy.
Factors Affecting Primary Productivity
Primary production is responsible for most of the life on Earth. This is the process by which plants convert the carbon dioxide that they have absorbed from the atmosphere and ocean into various other chemical substances. These chemical substances then provide the structure from which an ecosystem can emerge as animals of various kinds consume plant nutrients and develop a food chain. The factors affecting primary productivity are as complex as natural ecosystems are.