biology
biology
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1.
by D G Mackean - 2006-12-18
Advance preparationCut discs about 6 cm in diameter from thin card and make a pin-hole in the centre of each. The hole made by the spike on a pair of compasses or dividers is about the right size. Pro...
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2.
by D G Mackean - 2006-12-18
Outline. One finger of each hand is acclimatized to hot or cold water and then dipped into lukewarm water.Prior knowledge. The general idea of receptors sending impulses to the brainAdvance preparatio...
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3.
by D G Mackean - 2006-12-18
Outline. The mass lost by an uprooted plant in a flask of water is compared with the mass lost from an identical flask with no plant.Prior knowledge. Evaporation takes place from an exposed water surf...
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4.
by D G Mackean - 2006-12-18
Binocular Vision: Experiment(a) Keep both eyes open and hold a pen or pencil upright at arm's length.(b) Quickly move the pencil to come exactly in line with a more distant vertical object, such as a ...
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5.
by Enoch Tan - 2006-12-20
Groundbreaking scientific studies find that genes can be turned on and off by environmental signals - including thoughts, feelings and emotions - from outside the cell.Dr. Lipton is a pioneer in apply...
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6.
by Rudy Lopes - 2006-12-22
In most college curricula, you'll need two semesters of science and the corresponding lab courses to satisfy the science requirement. Unless you decide to pursue a science major, that means you'll nee...
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7.
by D G Mackean - 2006-12-23
The bites of the common British species of mosquito (Culex pipiens) cause little more than irritation and swelling. In many tropical countries, the Middle East and Southern Asia, species of mosquito i...
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8.
by Dianne M. Buxton - 2007-01-19
I was driving to work today and did my out-loud list of good things in my life. I began to reflect on how often I feel content and positive (that means, without WORKING on it). Then I felt a little ne...
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9.
by Dianne M. Buxton - 2007-01-25
I have spent considerable time studying the "create your own reality" gurus. The ones I mention in this article are not necessarily the best, as I think that different personalities are comfortable wi...
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10.
by Dr. Charles Sabillon - 2007-01-26
Most scientists tend to toil for long decades on their field of knowledge without seeing much progress in what they intend to discover. That usually leads to frustration and induces them to see limita...