Construct ladders with linking comments such as

"IS TRAPPED BY"
the ladder containing the statement above can be used to elevate the player from "Solar energy" to "Plants"

The complete sentence should read
"Solar energy is trapped by plant"

"Caterpillars are well camouflaged for"

The ladder with the above comment can be used to lift any player to a square with "Survival" in it. The height may depend on the length of the ladder on which the statement is written on.

The sentence should read
"Caterpillars are well camouflaged for survival"