Cracking the toefl ibt 2008 part 20

Chia sẻ: Tran Anh Phuong | Ngày: | Loại File: PDF | Số trang:10

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Cracking the toefl ibt 2008 part 20

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Now, some biologists are maintaining that the programs in the Avida project are alive. The programs live, die, reproduce, compete, coopGrate. and evolve—activities that many biologists consider the hallmarks of life. One prominent biologist says, "They don't have a metabolism— at least not yet. But otherwise, they're alive."

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