The euglena has membrane bound the nuleus. This is right answer.
Answer: Scientists think that early amphibians had lungs becuase they needed efficient oxygen uptake to support their metabolism. Higher rates of metabolism are needed on land, becuase of this scientist think that early amphibians breathed air with lungs.
Explanation:
Ok, I'm not fully sure but answer B sound right, so I think it's right
Çözüm şudur demişsin demekki sen biliyon ama bilmiyosan cevabı yazarım