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Drinking straw hydrometer
Procure a drinking straw or a stout natural straw about 20 cm long. If it is not 'water-proof' dip it in melted candle wax and permit it to dry. Seal one end with wax, and introduce some lead shot or fine sand unless it floats in a vertical position. Then drop in melted wax to keep the shots or sand in place. Have a thin rubber band or a piece of black cotton tied round the stem so that it can be slid up and down as a marker.
1.) Imagine that you are a particle inside an ice cube. You were placed into a glass of lemonade to cool it down. The lemonade has now been drunk and you have been left in the glas
What are the benefits of organic matter Most of the benefits of organic matter are attributable to its favourable influence on soil structure and in turn on the volume of soil
Air Borne Diseases: A number of diseases are caused due to bacteria and virus that are carried in the air. When an infected person sneezes or coughs, there is a noticeable spr
The term physiology -physio meaning native and logos meaning discourse, is a Greek word, a synonym for natural philosophy. As the evolutionary processes progressed, the need
Functional unit of the nervous system-neuron: The human brain is composed of more than one hundred billion (100,000,000,000 or 1011) cells called 'neurons'. This number which
Fits : Fits of various kinds may be accompanied by unconsciousness, and are usually characterized by the casualty being unaware of his/her reactions. You should remember the follo
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
A high pressure center is associated with what kind of weather: cool and dry
Beth ydy cell fur yn wneud. diolch!
Define Erythroblastosis Fetalis Besides the risk of a mismatch reaction during a second or during any subsequent blood transfusion, giving Rh-positive, blood involves risk in
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