When I'm reviewing answers that show up as low quality, and I've read the low-quality answer and agree that it's delete-worthy - e.g. there's no IPS solution in it or the answer is 2 or 3 sentences long - I've been using the "recommend deletion" option. Then the queue gets cleared when I'm done reviewing.
What actually happens to the answers that I recommend deleting? Do they go to a diamond moderator for another round of reviews, or is it automatically deleted, after another reviewer recommends deleting the answer, too?
To be clear, I don't have enough rep to cast delete votes -- I am referring only to working on the review queues.