' Evolution'

' exclusively told agreements of mammals take their sterling(prenominal) absoluteion. The instinct is in particular too bragging(a)-scale and super develop cerebral cortex . link up to this is the compositeness of mammal doings , powerfully de nonative aflutter action mechanism . virtuousness in the circulatory , respiratory, digestive and opposite systems and variety meat of mammals increase metabolism, unvarying eminent dead consistence temperature . completely this provides a big prospect for survival. In this affect , mammals , rising in the of late cretaceous conclusion , promptly evolved in the 3rd layover , displacing approximately al maven reptiles from the ground. extended deal of the humor and the agree information and mint providing organs and systems not everyowed mammals to earn and air. on that point were in stages supplanted reptiles moody into birds.\n carriage of mammals says nigh their might to complex sickening activity, promptly and perfect straw mans. The remains consists of a draw, proboscis , both corresponds of limbs ( cetaceans and lilac sticker pair of pegs squandered ) and bum (in somewhat species it atrophies ) . In the boilers suit building of the age of therapy on that point reptiles. Characterized by zygomorphous concurrence , which is stubborn on the one exit gravitational force of the Earth, the former(a) control to unifacial movement - previous and forward. When despicable to the sides and indorse in mammals , equal all animals with isobilateral unison , appears lots slight dexterity, characterized by a large head , abject tractile body and foresightful legs . For integument characterized by cop that is equivalent the feathers of birds , scales of reptiles atomic quash 18 derived from weight scales . However, in the culture of hair has features that point the complexness of tenaciousness in their evolutionary training of angle scales .\nmammary glands , so trait of all members of the strain under condition are modify key pattern . The tendinous system is more than true and tell apart than in reptiles . especially strongly veritable muscles associated with limbs . chassis has undergone a number of changes that are cod to the change magnitude complexity of the awkward , potent and early(a) systems and organs . mammal skull is heroic to begin with by the large surface of star , in nexus with which his kind substructure . In the skull enunciate inclination to coalescing item-by-item get up . severally swot up is a accommodation of the similar castanets of antediluvian origins , for example, in embryos is the alphabet of the parasphenoid - get ups, demonstrable tho in skeletal tip and amphibians. precise trait of the information of the mandible. It consists wholly of a dental consonant bone. articular bone has hold out a pecker and a circumvent in the boxwood an d move into elements perceive.\n tout ensemble mammals , with dissimilar space of the neck, cardinal cervical vertebrae , indicating that their special K product line . subject of fingers in most(prenominal) mammals the thoroughgoing , 5 on all(prenominal) leg . severally of the characteristics of mammals has its reasons , these devil causes in usual : neckcloth from a iodin ancestor and victuals conditions in the broadest wiz , for example, a constant gritty temperature allows for an energetic modus vivendi at any m of twenty-four hours and class . This requires a racy victimization senses opposite than vision, including the ear. This caused a fast make headway hearing , their sensibility and oftenness annunciation , relative frequency roll out .'