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A bottle barometer A bottle, partially filled with water, is overturned with its neck under the surface of more water in a saucer. This is the device used as a chicken feeder,
name a posible source of eath s magnetic field
4 light years( its distance is0
Explain the Menopause The cessation of menstruation is menopause. Natural menopause typically occurs between 45 and 55 years of age. It is caused by changes in concentration of
1.Summarize the evidence supporting the theory that the Cretaceous-Tertiary extinction, which includes the extinction of the dinosaurs, was precipitated to a significant degree by
difference between autotrophic and heterotrophic succession
Aprons : Additional protection, such as a rubber apron is recommended for work with appreciable amounts of chromic acid, hydrofluoric acid and other highly corrosive liquids.
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
The Fume Cupboard : If a reaction uses or produces harmful gases, dusts or vapours, it poses a risk of inhalation. Such reactions should be carried out not on an open bench but in
REGULATIONS CONCERNING SAFETY AND HEALTH OF WORKERS IN INDUSTRIAL LABORATORIES The workers in industry engaged in using or producing chemicals, coal, high temperature, intense
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