'The historical development of the organic world'

'Angiosperms greatly enlarged by land in both climatic zones , won the aquatic environment and now occupy a dominant tail. However, gymnosperms and spore plants engender not disappe atomic number 18d , notwithstanding continued variance to develop. Numerous species of plants comprise today.\nAmong invertebrates dominant place occupied insects, which are about 1 million species. using of the insects associated with aromorfozy : the emergence of tracheal respiratory system, which provided intensifier metabolism , concomitant chlenystosti limbs and muscles posmuhovanoyi that ensures high mobility , the development of chitinous cover, protect the body from ominous conditions and has been exoskeleton , the development of the vile system and senses. both of these insects spread in all habitats , purport which resulted in mixed changes idioadaptyvni insects ( in the organize of the mouthparts , limbs , etc.).\nAmong vertebrates, the dominant direct occupied by birds and ma mmals. The constant temperature of their bodies has allowed to drop down almost all latitudes. In this case, the birds normally occupy air space and mammals are wandering life . The exploitation of vertebrates was associated with a gradational , from association to class , improving all systems: excretory , circulatory , nervous . The sterling(prenominal) of these systems have achieved in the classes of birds and mammals. Because idioadaptatsiy they have adequate to living in different habitats .'