define gross production net production and biomass

These are material contained in the bodies of plants, and animals, which can be used as a fuel or act as a source of fuel. Typical examples of Biomass are, wood, animal dung, agricultural waste (such as, baggasse), wild grass and plants etc. Biomass is a conventional source of ..

'The amount of organic matter or biomass produced by an individual organism, population, community or ecosystem during a given period of time is called productivity'. Primary production refers to all or any part of the energy fixed by plants possessing chlorophyll. The..

'The amount of organic matter or biomass produced by an individual organism, population, community or ecosystem during a given period of time is called productivity..

Describe which measure of central tendency - mean, median, or mode was probably used in each situation. Answer in order. I. One half of the gross domestic product (GDP) of country A comes from more than 42.5% of its citizens. II. Computation of per-capita income in several count..

Population of a country should grow reasonably to match with growth in its gross domestic product to maintain the existing standard of living. Reducing growth or negative growth in population may be desirable if the standard of living should increase by more favourable per..

India produces only half of the national requirement of petroleum products and it imports the rest from other countries. Natural gas is the most popular petroleum product. During last two decades, the consumption of natural gas resources have increased tenfold. If we need to sav..

Non-renewable or conventional energy resources. Most of the energy, which people are using, is derived directly or indirectly from the sun. Non-renewable energy resources are those, which have been in use since a long time. Availability of petroleum is limited. Petroleum products are no..

Summary - Today most of our energy needs are supplied by the fossil fuels. In one hundred years coal will be the only one left as petroleum products may remain only for 3 to 4 decades. Little of stored energy will be left if we continue to use energy at the same rate. Fossil fuels are non..

Grazing food chain is generally seen in ecosystems such as grassland, pond or lake where a substantial part of the net primary production is grazed on by herbivores (cattle and rodents). Usually upto 50% of the NPP is grazed on by these animals in their respective ecosyste..

Population of a country should grow reasonably to match with growth in its gross domestic product to maintain the existing standard of living. Reducing growth or negative growth in population may be desirable if the standard of living should increase by more favourable per capit..