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Electric eel:most remarkable predator in animal kingdom
Electric eel predator animal kingdom
2015/11/12
The electric eel may be one of the most remarkable predators in the entire animal kingdom.That is the conclusion of Kenneth Catania, the Stevenson Professor of Biological Sciences at Vanderbilt Univer...
CORAL GABLES, Fla. (April 22, 2014) — There are all sorts of signaling strategies in nature. Peacocks puff out their feathers and spread their colorful tails; satin bowbirds build specialized stick st...
《The Descent of Man, and Selection in Relation to Sex》Chapter IX Secondary Sexual Characters in the Lower Classes of the Animal Kingdom
The Descent of Man, and Selection in Relation to Sex 人类由来与性选择 查尔斯·达尔文 Charles Darwin
2008/12/22
WITH animals belonging to the lower classes, the two sexes are not
rarely united in the same individual, and therefore secondary sexual
characters cannot be developed. In many cases where the sexe...