What Is Abalone and What Is It Used For?
Abalone is a type of mollusk belonging to the class Gastropoda. A univalve, meaning that it has one shell which is a slightly flatted…
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Spiral
Where Do Spiders Keep Their Webs?
Where Do Spiders Keep Their Webs? A spider does not have a ready made web. She spins one. If you are lucky, you may be able to watch the fem
What Will Happen to Each Screw?
Take a close look at the two screws below. Suppose they were both turned in a counter clockwise rotation. What will happen to each screw?