Известно что в древние папоротники достигали в высоту 20м как вы думаете что достижению такого роста​

ответ: предмет по которому задан вопрос английский. Собсна и ответ на английском.

There are many reasons why ferns grow tall. Starting from the type of land and ending with what type of biome the fern is located in, as well as the humidity of the territory. All this is the most common plant mutation that has come to us so that the fern itself is several percent protected from its past progenitor. Such are the things.