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Explain about the Dessicator?
A dessicator is used to prevent an item from absorbing moisture. It is able to accomplish this because of a chemical, known as the dessicant, is housed within the container.
This chemical, normally sodium sulfate, is extremely hygroscopic and will readily absorb water from the air. Figure illustrates a dessicator used to keep salts that absorb atmospheric humidity. It prevents chemicals from absorbing moisture from air.
Directional or progressive selection is the mode of selection associated with environmental change. We said earlier that in an unchanging environment stabilising selection removes
Define Institutional and Cultural Barriers - Infuse Biology? Inside the university, the departmental promotion and tenure committees understand well the value of contribution t
Insect killing jar Secure a wide-mouth glass jar with a screw top or single which closes very tightly. Place a wad of cotton in the bottom and cover it with a round piece of ca
Explain Basal Metabolism Rate (BMR) - Ageing? From age 25 years, the basal metabolism decreases by about 2 percent for each decade due to the increasing proportion of body fat
What similarities do birds and reptiles share regarding external coverage, reproduction and excretion? Regarding external coverage, birds are same to reptiles as they present
Determine about the visual axes of eyes In normal eyes, the visual axes are parallel to each other in the primary position of gaze. This position is usually maintained but in t
Operculum - Seed Appendages The term operculum is applied to a plug-like structure formed in the micropylar portion of the seed by proliferation of cells at the tip of the inn
description of first five phylum
what is endosperm haustorium
how they are joints to each other
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