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Some activities that make use of biological resources, without involving their extraction or destruction, denote non- extractive use of biological resources. This includes ecotourism, wh ich involves a direct ‘transaction' between people and biological resources and fall into the category of direct use values. However, as it does not involve destruction or a change in the resource - in this case the natural areas visited by tourists - it can be classed as a non-extractive use. Likewise, scientific research in natural areas, bird watching and plant breeding are some other examples of non-extractive use of biodiversity.
In this section, we shall discuss a classic example of natulal selection in action. In the preceding unit, it was stated that natural selection always aims at eliminating alleles,
Define Fish as a rich source of protein? The edible portion is skeletal muscles of the body. Even though the skeletal muscles of different animals are basically similar, fish s
Q. What is the difference between facilitated and simple diffusion? Facilitated by which kind of molecule does the term "facilitated" mean? Simple diffusion is the direct passa
what are the branches of botany?
A saline drip is to be prepared for a lab experiment that is looking at hydration in lab rats. Calculate the amount of NaCl need to make 4 liters of a 0.9% solution.
Necrobacillosis of liver It is a disease of cattle and lambs. The causative organism is Fusobacterium necrophorum. The condition does not usually cause any clinical symptoms i
Provide a link to the graph, describe the variables, and interpret the meaning of the graph
Lymphatic Vessels The function of lymphatic vessels is to aid in the return of interstitial fluid to intra-vascular volume. They assist with transport of lipids from th
Why do you think the energy requirements are different in situations? Well the requirement is dependent on the ways in which the body spends energy. For example in the first c
Migration in birds
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