Yillik halqalarning soniga va ensizligiga qarab daraxtlarning ... va ... aniqlash mumkin.

  1. yoshini, turini
  2. yoshini, qanday sharoitda o`sganligini
  3. yoshini, yil faslini
  4. yoshini, kasalligini

📝 Detailed explanation

Halqalar soni daraxtning yoshini ko'rsatadi (har yili bittadan halqa hosil bo'ladi). Halqaning eni esa o'sha yilgi iqlim sharoitiga bog'liq: keng halqa — qulay, yog'inli yil; tor halqa — qurg'oqchil yoki noqulay sharoit. Demak, halqalar yordamida o'tmishdagi iqlim ham tiklanadi (dendroxronologiya).
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