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Valuation of biological resources includes the process of deriving a monetary value to the things that are not sold in the market. Examples are the value given to fuelwood gathered in the forest, water filtration provided in a wetland or biological resource that may supply new medicines in the future. Valuation is essential for a "social cost- benefit" analysis of biodiversity (i.e. analyzing the costs and benefits of maintaining biodiversity for a society), and is linked to "environmental accounting" which means the modification of national accounts to take into consideration the economic role of the environment. Many countries in the world are now attempting this. It is believed that over 25 countries have experimented with environmental accounting over the past 20 years and a few European countries have already set up physical accounting systems that are routinely complied and applied to economic and environmental policy making. Biodiversity valuation can contribute to constructing environmental accounts at the national level.
Types of Ovules Anatropous This is the most common type of ovule in angiosperms in which the ovule undergoes curvature such that the micropylar end comes to lie parallel
On living organism Air pollution causes following effects on living organism: (a) Effects on humans: 1. Carbon monoxide reduces the oxygen carrying cap
cells are the smallest structural units of the living matter and is capable of functioning independently.
Q. Of which kind of tissue is the heart made? How is this tissue oxygenated and nutrified? The heart is made of striated cardiac muscle tissue and the heart muscle is called th
1. Noise producing industries, railway stations, and aerodromes should be located away from the residential areas. 2. Check on the traffic in the residential colonies.
F a c t o r s responsible for transboundary diseases Factors that affect the entry, establishment and spread of animal diseases include globalization; human population gr
How does the formation of the enzyme-substrate complex define the reduction of the activation energy of chemical reactions? The enzyme possibly works as a test tube within whic
Q. Describe about defecation reflex? An example of a reflex having an autonomic (and somatic) component is the DEFECATION REFLEX: The rectum is generally empty, but when fec
Why can the allantois be considered an adaptation to terrestrial life? The allantois is an adaptation to dry land because in embryos of oviparous terrestrial beings, like repti
genral charecter and classificatin of porifera
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