![Lifeonlandprobablybeganabout430millionyearsago,thoughti...]( "Lifeonlandprobablybeganabout430millionyearsago,thoughti...")
- 问题详情：Lifeonlandprobablybeganabout430millionyearsago,thoughtithadexistedinthewaterforperhapsaslongas3,000millionyears.Whenwethinkofthefirstlifeonland,weprobablythinkofstrangeanimalscomingoutoftheoceans,but,infact,noanimalscouldhavebeenlivingifplant...
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