we humans have lived on earth.we和humans重复了吧

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• the earth is 4600 million years old.we humans have lived on earth for only 35000.全文翻译
• deductive arguments 和 inductive arguments 的区分为什么—All humans have hearts,—I am a human,—Therefore I must have a heart.是inductive argument?无法理解啊,解释上说—This is an inductive argument.Scientific claims are never completely certain.They are always open to refutation if an observation is made thatcontradicts them,i.e.we find a human who does not have a heart.但是我觉得照这个解释来看应该是 deductive invaild
• we humans have lived on earth.we和humans重复了吧
• the earth is 4600 million years old.we humans have lived on earth for only 35000.全文翻译
• Dinosours lived on the earth for more than (150 million years) 括号部分提问
• Dinosaurs lived on Earth more than 60 million years before human beings.Thay lived everywhere on Earth.Some dinosaurs we