[katana]

I agree. It's why I used the phrase "most of". Astronomical observation seems to show that complex hydrocarbons are commonplace in the solar system and probably the universe so the idea that all of the crude oil and methane under our feet at depths measured in thousands of feet derives from decayed life forms should be discarded into the same pile with Piltdown Man and Anthropomorphic Global Climate Change.

[Jack Hydrazine]

And as far as we know algae isn’t able to grow on Titan!