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Explain Saliva - External Defence Mechanism
Saliva contains microorganisms which are not the normal inhabitants. Dead microbes are passively flushed by the saliva and are swallowed.
clothing materials and their respective qualities
classification of animals
encyclopedia
For all other wastes i) Burial The spillage could be buried using any of the following methods: The spillage could be mixed with sand and buried deep. Examples: Iodine
Laboratory Method of Soil textural classes The mechanical analysis methods have been used by USDA to develop a method for naming the textural class. This is depicted by a trian
what is light energy
Evaporation Highly volatile liquid wastes could be disposed of by effective ventilation. Example : Diethyl et-her. Moderately volatile liquid wastes can be absorbed on
How the lungs work Cut the bottom off a large bottle. Fit a cork to the neck with a Y tube in it. On every of the lower limbs of the Y tie a rubber balloon or a number of small
Describe about the Moles Molehills, frequently observed in some fields are composed of subsoil deposited by moles. They need a good reserve of calcium in soil.
structure and function of respiratory organs in arthropoda with diagram
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