ответ: Мне кажется, что Present perfect употребили потому что, хотели сделать акцент на действии, а не времени действия. То есть, важно то, что человек людям, а не то, когда он это сделал.
The climate in kazakhstan is quite favorable, which enables many members of the animal kingdom to dwell in this particular area. in kazakhstan many mountains, which contribute to the diversity of the animal world. in the mountains and ravines there are many different family and invertebrate predators. due to the temperate climate, abundant rainfall and good flora in animals, habitats which became kazakhstan, practically no food shortages. adults have a great opportunity to grow up healthy offspring, which is not exhausted, and after a short period of time can start an independent livelihoods. in kazakhstan there are a large number of wild animals that live in mountain areas, these animals have a good rest in peace and thick hair to carry out a successful hunt in the mountains, because there is quite a low temperature. many breeders often discover new species in kazakhstan, because the area is quite large and the development of the animal world is happening rapidly. among the representatives of insects in kazakhstan found a huge amount of ground beetles, rove beetles, beetles, butterflies, ants and bees. there are more than 245 vertebrate species. the rivers and streams of kazakhstan large number of fish of different semeystv.imenno in kazakhstan, home to rare reptiles, which include: danatinskaya toad central asian frog, lizard colored, alai gololaz, copperhead snake, vipers, snakes and other animals. in the mountainous regions of kazakhstan have the opportunity to meet these mammals rock white-toothed shrew, shrew tien shan, tien shan birch mouse, gray marmot, pika red, stone marten, snow leopard, mountain goat, fox, bears, wolves, red deer, roe deer, wild boar. this site also live very rare wildlife species: indian porcupine, pallas' cat, tien shan brown bear, turkestan lynx.
Hot-hotter- the hottest long -longer - the longest short shorter the shortest clever cleverer the cleverest silly sillier the silliest great greater the greatest thin thinner the thinnest thick thicker the thickest fat fatter the fattest nice nicer the nicest warm warmer the warmest cold colder the coldest small smaller the smallest tall taller the tallest hight higher the highest weak weaker the weakest strong stronger the strongest heavy heavier the heaviest light lighter the lightest dry drier the driest white winter the whitest grey greyer the greyest clean more clean the most clean dirty dirtier the dirtiest wide wider the widest deep deeper the deepest brave braver the bravest
ответ: Мне кажется, что Present perfect употребили потому что, хотели сделать акцент на действии, а не времени действия. То есть, важно то, что человек людям, а не то, когда он это сделал.