[zbyte64]

I would think the simple life we would see in our solar system would be less sophisticated then bacteria. Confirming plants and animals outside of earth would mean looking beyond our solar system and in 20-30 years we should be able to see the color of the planets Kepler has found. Once we can get a few pixels off a planet we can start to tell if photosynthesis is occurring. So for the first two categories my money is on 15/30. For intelligent life I can't even make a good guess.