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2) Localized sure, I wasn't arguing about the entire planet. But introduced life could drive the native life to a local extinction. And if it did so fast enough
by anonymouskimmer 4y ago
2) Localized sure, I wasn't arguing about the entire planet. But introduced life could drive the native life to a local extinction. And if it did so fast enough we would never know the local life had been there.
3) Yes, I know. While this isn't my specialty I work at an organization that does have people that specialize in this. The difficulty would be in definitively concluding whether this is a native divergence that we've just never seen before, or the result of Martian evolution.
- WalterBright 4y ago2. We've found fossilized remnants of bacteria in rocks, haven't we? There's also ice on Mars. If life existed, we'd find it frozen in the ice. 3. A billion years of evolutionary divergence, with local alien adaptations, is going to be very hard to confuse with anything brought over by a probe.