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In a single year,the Netherlands can raise 100 tons of beef or produce 1,000 boxes of tulips.In the same growing season,Belgium can raise 50 tons of beef or produce 750 boxes of tulips.From this information,we know that:
Lophophore
A unique feeding structure bearing ciliated tentacles, found in certain marine invertebrates such as bryozoans and brachiopods.
Arthropods
A diverse group of invertebrate animals with exoskeletons, segmented bodies, and paired jointed appendages, including insects, arachnids, and crustaceans.
Antheridia
Male reproductive structures in ferns, mosses, and some algae, which produce and release sperm.
Archegonia
Egg-producing structures, as in the moss life cycle.
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