Crossword Genius

Variety needed in world construction (3,5)

Ross

I believe the answer is:

all sorts

I'm a little stuck... Click here to teach me more about this clue!

'in world construction' is the definition.
I know nothing about this answer so I can't tell whether this works.

'variety' is the wordplay.
I cannot really understand how this works, but
'variety' could be 'sort' (synonyms) and 'sort' is located in the answer.
This may be the basis of the clue (or it may be nonsense).

'needed' is the link.

Can you help me to learn more?

I've seen this clue in The Globe and Mail.
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