Business or things that have to do with trading in business
Ecological metaphors are used to help develop authors ideas to communicate them to public
<span>"That these little creatures survive in these small pools of water" is the whole noun clause You could replace that whole noun clause with "That fact" which is a noun phrase and have a sentence That fact is amazing where "that fact" would be the subject.
Likewise, </span>this whole noun clause represents A SUBJECT of the sentence because it corresponds with the predicate "is".
In The Red Badge of Courage, when Henry wakes up in camp the day after fighting, he first think he is in a Charnel place because the sleeping men around him look dead.