Помощь с определением времени глагола

  • Выпишите из 1-3 абзацев глаголы-сказуемые, определите их видо-временные формы.
    Agronomy is the branch of agriculture that treats of the principles and practice of crop production and field management. The term «agronomy» is the combination of two Greek words «Agros» (field) and «nomos» (management).
    The modern science of agronomy is based on the coordination of different sciences such as genetics, physics, plant physiology, botany, chemistry, economics and many others.
    Man began to cultivate plants many centuries ago. The first farmers grew a limited number of crops and these crops were not as productive as they are today.