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To show the differences in soil particles
Secure some glass jars that hold about half Gallon or two litres of water. Place various handfuls of soil in a jar. Fill the jar with water and then methodically shake up the soil in the water. Let the jar stand for various hours. The heaviest particles will settle out first and the lightest ones last. The layers in the jar after settling will be in the order of the weight of the soil particles. Siphon the water from the jar with a tube. Next study a small sample from each of the layers with a magnifying glass.
How to make a filter A plant pot with a plug of cotton wool in the bottom and a layer of sand a few inches deep makes a satisfactory filter for many purposes. Make some mudd
Explain Collecting Duct or Tubules - Structures of a Nephron Collecting Duct/Tubules: A long straight portion after the distal tubule is the open end of the nephron. It extends
Explain Free-radical theory of Ageing The body is subjected to a dilemma. On one hand, O 2 is essential for life and on the other hand, oxidative reactions can set free a lot
Explain the Functions of adrenomedullary hormones The functions of the adrenal medulla hormones - adrenaline and noradrenaline - are to: Prepare the body to deal with th
Objectives After studying this unit, you should be able to: 1. Categorise different radiations into ionising and no ionising types, 2. Explain the effects of radiations
Fire Escapes : When a fire breaks out in a building, it is not unusual for people to panic. Sometimes flames can spread rapidly, especially if fanned by blow of air from open or b
Ask question #Minimumwhat is that definition for cell theory? 100 words accepted#
The buoyancy of water Find a metal can like a coffee can or a cigarette tin which has a tightly fitting cover. With the cover on, push the can into a pail of water, cover end d
Explain the Regulation of Blood Composition Each part of the nephron has different types of cells with different properties. An understanding of this is important to know how t
1. A square in the 2d plane has the x and y co-ordinates of (0, 0), (1, 0), (0, 1) and (1, 1). Apply a scaling of 0.5 units in the x direction, followed by a translation of three
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