Chirituvchi bakteriyalar bo`lmaganda ...
a) yer yuzi qoldiqlar bilan to`lib ketadi; b) o`simlik va hayvonlar uchun ovqat yetarli bo`lmas edi; c) o`simlik va hayvonlar uchun yashashga joy qolmaydi; d) o`simlik va hayvonlar uchun ovqat yetarli bo`lar edi.

  1. a, b, c
  2. a, c, d
  3. b, c
  4. c, d

📝 Detailed explanation

To'g'ri javob — a, b, c.
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