The historical development of the organic world

Angiosperms greatly enlarged by land in altogether climatical zones , won the aquatic environment and forthwith occupy a dominant bottom. However, gymnosperms and spore plants perplex not disappeargond , exactly continued going to develop. Numerous species of plants embody today.\nAmong invertebrates dominant place occupied insects, which are about 1 million species. exploitation of the insects associated with aromorfozy : the emergence of tracheal respiratory system, which provided intensifier metabolism , point chlenystosti limbs and muscles posmuhovanoyi that ensures high mobility , the nurture of chitinous cover, protect the body from inauspicious conditions and has been exoskeleton , the development of the nauseating system and senses. in solely of these insects spread in all habitats , demeanor which resulted in mixed changes idioadaptyvni insects ( in the body structure of the mouthparts , limbs , etc.).\nAmong vertebrates, the dominant condition occupied by b irds and mammals. The constant temperature of their bodies has allowed to specify almost all latitudes. In this case, the birds usually occupy airspace and mammals are planetal life . The development of vertebrates was associated with a gradational , from word form to class , improving all systems: excretory , circulatory , nervous . The great of these systems have achieved in the classes of birds and mammals. Because idioadaptatsiy they have commensurate to living in different habitats .