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FIRE HAZARDS IN THE LABORATORY : The average science laboratory is a particularly hazardous area when it comes to fire. Flammable liquids, compressed and liquefied gases, hazardous and reactive materials, are all either in use or in store in the laboratory. In addition, there are many sources of ignition available. Before you learn about the major causes of fire, let us see in the following subsection the factors that are required for fire to burn.
why do we study science?
Explain the Dyspnoea Shortness of breath or dyspnoea is a feeling of difficult or labored breathing that is out of proportion to the patient's level of physical activity. In ot
Making soil from rocks Search some soft rocks in your locality like as shale or weathered limestone. Bring them into the classroom and have the peoples crush and grind them up
Explain the Spinal Nerves As mentioned earlier, there are 31 pairs of spinal nerves that leave the vertebral canal by passing through the intervertebral foramina formed by adja
List any three human activities that you think would lead to air pollution. The following three human activities would lead to air pollution: (i) Burning of fossil fuels such
Explain Nasal secretions and Cerumen Nasal secretions: These can destroy harmful organisms due to lysosomal activities. Cerumen (wax of ear): It traps and kills the bacteria
A Cloud Made of Comets The cold outer areas beyond Pluto are the regions of comets, those visitors that dash, around the Sun, seldom to be seen again. Comets are of grei3t
Determine the role of Time in soil formation Time plays a very important role in the soil formation as it provides for the soil forming processes to act and cause significant c
Determine in detail about the Phosphorus Phosphorus, with nitrogen and potassium is classed as a major nutrient element. It is a constituent of nucleic acids, phytin, phosphol
Explain the Role of secretin Secretin is a polypeptide containing 27 amino acids. It is present in the mucosa of the upper small intestine in an inactive form prosecretin. When
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