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Necessary and Proper Clause. The Necessary and Proper Clause, also known as the Elastic Clause, [1] is a clause in Article I, Section 8 of the United States Constitution: The Congress shall have Power... To make all Laws which shall be necessary and proper for carrying into Execution the foregoing Powers, and all other Powers vested by this ...
The waggle dance - the direction the bee moves in relation to the hive indicates direction; if it moves vertically the direction to the source is directly towards the Sun. The duration of the waggle part of the dance signifies the distance. Waggle dance is a term used in beekeeping and ethology for a particular figure-eight dance of the honey ...
In physics, an elastic collision is an encounter (collision) between two bodies in which the total kinetic energy of the two bodies remains the same. In an ideal, perfectly elastic collision, there is no net conversion of kinetic energy into other forms such as heat, noise, or potential energy. During the collision of small objects, kinetic ...
e. In physics and materials science, elasticity is the ability of a body to resist a distorting influence and to return to its original size and shape when that influence or force is removed. Solid objects will deform when adequate loads are applied to them; if the material is elastic, the object will return to its initial shape and size after ...
Meaning. According to tradition, "the birds and the bees" is a metaphorical story sometimes told to children in an attempt to explain the mechanics and results of sexual intercourse through reference to easily observed natural events. For instance, bees carry and deposit pollen into flowers, a visible and easy-to-explain parallel to fertilization.
Coevolution. In biology, coevolution occurs when two or more species reciprocally affect each other's evolution through the process of natural selection. The term sometimes is used for two traits in the same species affecting each other's evolution, as well as gene-culture coevolution.
Californian utility PG&E shuts power for customers over wildfire risks. (Reuters) - U.S. utility firm PG&E Corp said on Monday it has cut power for over 9,000 customers in northern California as a ...
Karl Ritter von Frisch was the son of the surgeon and urologist Anton von Frisch (1849–1917), by his marriage to Marie Exner. Karl was the youngest of four sons, all of whom became university professors. Von Frisch was of partial Jewish heritage. [5] His maternal grandmother was of Jewish origin. [6] Karl studied at the University of Vienna under Hans Leo Przibram and in Munich under Richard ...