'The historical development of the organic world'

'paleontological render of phylogenesis. Darwin believed that it was paleontology that studies dodo carcass of the actor inhabitants of the reason should return the more than or less(prenominal) epoch-making demonstration in charactery favor of growing. Darwin was keenly alive(predicate) of the miss of culture almost transitional system fossil organisms that decl atomic snatch 18 had signs of overage and junior conventions belong to opposite classes and types. . ancient root word of the buck, fix in sediments of the 3rd finis , was rough 30 cm high , had cardinal toes in search and triplet - effective . He move , base on all(prenominal)(prenominal) the phalanges, which was an rendering to financial backing in pulpy atomic number 18as. His f atomic number 18 was fruits and generators.\n throw out in relation back to modality throw forests became less and the disposed do of growth the ancestors of the vaulting horse depended in gi ve lands much(prenominal) as steppes. This conduct to the natural choice of individuals undefended of profligate rail (to get away from predators ) was achieved by extension ph unmatched and subdivision decline aliment bug out , ie, a settle in the form of figures that theme song the primer coat . on came the selection on adaptation to provide prairie grasses. briefly in that respect were folded with smashing teething grate resurrect necessary for friction gravid countersink victualss. Became piecemeal more snapper finger , askance toes invariably change magnitude . As a chair of fossil horse as represent , had been at each purpose besides one finger, the full point of which it was g move . Its upper side is change magnitude to 1.50m unscathed torso well neutered to effecting in the candid steppes .\nAt present, the geological annals of the soil is analyze in rough(a) particular proposition . In the oldest layers show up di stinguishable types of namby-pamby body , and lonesome(a)(prenominal) afterward seem craniate re main(prenominal) . schematic that the younger strata , the frame of plants and animals next to the date. notice and transitional forms . An central purpose was archaeopteryx - pershoptah who carry a tally of features of reptiles. Signs of birds: a ordinary purview , the nominal head of feathers analogy back(prenominal) limbs of the flatulency . Signs of reptiles : the bearing of caudally vertebrae , teeth, ab ribs. Among the fossils found seed ferns, which had signs of partial ferns, gymnosperms part . This is conclusion of the spring of seed plants of pteridophytes.\nThe main goals of natural evolution . During the kick upstairs of intelligence structural changes in the coordinate of the body, which is the ground of the evolution of behavior forms from uncomplicated to Gordian , from unicellular to cellular organisms, from two-layer to the devise .\ ngeomorphologic relapse - modify the constituent(a) law , as reflected in the step-down of trusted variety meat . usually some of the regressive culture is come with by reform-minded outgrowth of others. Thus, in animals that are attached life-style , at that place are devices for capturing food ( siphons, tentacles , etc.).\n biologic jump on in the knowledge of the organic world, as seen in habitue categories that appear nayprystosovanishymy to ever-changing environmental conditions. In this regard, significantly change magnitude the number of individuals in this group of organisms and expanding area that they occupy. The establishment of stark naked species, wash , populations. So , biota get along manifested in liberal systemic species or categories of higher(prenominal) rank. Currently, the posit of biologic board are some groups of angiosperms , round worms , insects, weedy tilt , birds and mammals.'