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The terms ecosystem was introduction by Sir Arthur tensely in 1935. An ecosystem can be defined s "a structural and function unit of biosphere consisting of living organisms and their physical environment, both interacting and exchanging the materials between them". In other words," an ecosystem is an area that contains organisms For example Plants, animals, bacteria and human beings etc. which are interaction with one another and with their non- living environment". An ecosystem may be big or small, natural or manmade, eg.:
(i) Micro organism such as bacterial limited to few mm2 or cm2 areas (Natural).
(ii) Desert ecosystem may exist in hundreds of Km2 area (Natural).
(iii) Crop field , aquarium (Man made).
Determine the Food Sources of Pyridoxine? Raw foods contain more of this vitamin than cooked foods. The food sources include: 1. Rich sources: Rice polishing s, wheat bran,
Potassium (K) - Macronutrients The main source of K + for plants comes from withering of K containing minerals. Potassium released by withering dissolves in the soil solution
In the long term reversible causes of heart failure like valvular lesions, myocardial ischemia, uncontrolled hypertension, arrhythmias, alcohol, negative inotropic agents, intracar
Determine about the Halstead's method Reitan adopted Halstead's methods and various test procedures and with them established a laboratory at the University of Indiana. He supp
"In these autotrophs, sporophyte is the dominant generation. Gametophyte is also photosynthetic and not dependent on sporophyte for nutrition." These autotrophs are: a. P
List the short-term and long-term effects of forest destruction (a) on hillsides, (b) in the tropics. (a) Deforestation on hillsides exposes the soil to erosion by rain and l
Q. Cnidarian identity card. How are they characterized according to instance of representing beings, basic morphology, kind of symmetry, germ layers and coelom, digestive system, r
Calculate a 95% confidence interval for the difference among the average numbers of ant species in the two regions. Compare your results to SPSS output and interpret the confidence
Explain the difference between numerical chromosome abnormalities and single gene disorders. Describe methods of diagnosing chromosome abnormalities prenatally and after birth. How
Impoundments - Lentic Ecosystems We have so far discussed natural lakes. In addition to these there are a number of lakes both small and large artificially created by man cal
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