substrate

cement -- that's the silk that's used to adheresilk lines to a substrate.There's also aciniform silk,

Now, how does this work?Well, we start with a substratethat has a light-sensitive film on it.

And if we remove it, we're in a situation where now the copperisn't going to stick to that underlying substrate.Think about building a house of Lego blocks,

And the corollary, of course, is that any further changesthat could significantly change the substrate of thinkingcould have potentially enormous consequences.

but we're also seeing the death of an incredibly complex ecosystemfor which these trees are merely the substratefor the aerial labyrinth of the sky that exists in their crowns.