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Introduction : In any laboratory dealing with biological experiments, hazards can occur mainly due to chemicals and biological materials. In the previous exercise you have done the activity of classifying hazardous chemicals and you also learnt the skill of handling such chemicals. In this exercise you will carry out the activities related to the disposal of biological materials after the experimental work with such materials is over. Disposal activities are related to microorganisms and dead animals. Since these materials cause contamination and infections very rapidly, more care is required in their disposal. Disposal of plant materials is comparatively simpler. Put all the used plant materials in a disposable bag, seal or tie the bag and put it in the waste collecting bins.
Briefly explain why it is important to reinforce alternatives to problem behavior when using a punishment procedure. Give one example of the use of both a punishment procedure
How has the earth changed since it was formed? Ans) The earth has changed particularly since it was formed. Earth was a ball of rock that was strike and changed by loads of imp
Explain Precipitation - Antigen-Antibody Interaction If Ag-Ab are present in an appropriate ratio, they form a precipitate in blood. Turbidity is developed, this can be measure
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Explain the Histotoxic Hypoxia It is a type of hypoxia in which due to the action of a toxic agent oxidative enzymes are poisoned hence the tissue cells cannot utilize oxygen s
Define White Blood cells (WBCs) WBCs are also called leukocytes, as they are colourless. They are the army of the human body. Whenever a germ or infection enters our body, the
The effect of soil on growing things Get samples of a fertile soil from a flower or vegetable garden, from a wood, from a place where a cellar is life form dug, from a sandy pl
Explain in brief about the Laterite soils These soils are derived from the subaerial weathering of several types of rocks, both basic and acid under climatic conditions of alte
INTRODUCTION : You may find this exercise as a practical illustration for the procedure generally followed in the disposal of unserviceable and obsolete items in a laboratory. It
Occurrence and characteristics of earthquakes
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