гордеева анна владимировна

Определить видовременные формы глагола-сказуемого   1 ответ

1.During the 199's, scientists have developed better varicties of plants and livestock.
2.Animal husbandry, which has been proctised for thousands of years, seeks to improve the quality of livestock.
3.Each year hundreds of new kinds of animals are discovered.
4.Food crops can be divided into eight groups.