A commentary on prime numbers and life cycles of periodical cicadas

Article Abstract:

Two similar models of periodical cicada evolution have a number of differences. Among these differences are those that pertain to mechanisms of cicada mortality as well as the maintenance of emergence synchrony and periodicity. While both models assume that the length of life cycles is affected by cooler temperatures of Pleistocene glacial stades, the probabilistic model is less speculative since it exhibits greater congruence with the climatic features of glacial stades within deciduous refugia and with phenologies of nymphal development in the species.

Research, Analysis, Life cycles (Biology), Numbers, Prime, Prime numbers, Cicada, Cicadas

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Trucker meets yuppie: a new style of pickup

Article Abstract:

The latest full-size pickups cater to the trend toward personal use with comfortable interiors and a smooth ride. The new-design Ford 150 comes with a 4.2l V-6 or 4.6l V-8 engine, while the Chevy C-K and GMC Sierra offer a 5.7l V-8, 4.3l V-6 and a 6.5l V-8 Diesel, and offer roomy supercabs.

Evaluation, Trucks, Product/Service Evaluation, Ford F-Series (Truck), GMC Sierra (Truck), Chevrolet C-K Series (Truck)

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Dynamic duo

Article Abstract:

Women's tennis in 2001 has become faster, more powerful and more exciting with prize money to match. The Williams sisters, Venus and Serena, have propelled the women's game into the spotlight and encouraged attendances at tennis matches.

Behavior, Competitions, Tennis, Williams, Venus, Williams, Serena

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