Phrases with «useful effect»

Does anyone think that (currently) reforestration / forest preservation can have the slightest useful effect on CO2? (realclimate.org)
All the armor sets in the Jyura family sport high defense, but many of them sport very useful effects for the fight with Barroth. (heavy.com)
Request Tickets and Calling Cards in Animal Crossing Pocket Camp have some very useful effects. (heavy.com)
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