They are connected by commas and the conjunction "и" (and).
Since you requested a "piece" or example, here is a general breakdown of how to approach a typical 8th-grade task from this curriculum, such as analyzing or Sentences with Homogeneous Members : Example Analysis: Homogeneous Members of a Sentence russkii iazyk 8 klassa avtor e.a bystrova n v mangutova gdz
(Answer)To provide a specific answer, please specify the exercise number (упражнение) or the topic you are currently studying from the Bystrova/Mangutova textbook. They are connected by commas and the conjunction "и" (and)
Use a comma between homogeneous members when there is no conjunction. If there is a single "и" between the last two items, no comma is needed before that "и". Where to Find Full Answers If there is a single "и" between the
Sentence: "В лесу росли сосны, ели и берёзы." (Pines, firs, and birches grew in the forest.)