Crustaceans are the only arthropods with two pairs of antennae
That depends on the type of crustacean in question; it varies between species.
2
a grass hopper has 2 antennae's
two
7,0000000000.0000
No because a crustacean has a exoskeleton and a mussel has a shell
it has 2 pairs of body's
a crab is a crustacean
No. A bird is not a crustacean.
crustacean is not a decomposer
It is impossible to know exactly how many species on earth have antennas. All insects have antennas and although only 900,000 have been recorded most scientists believe there could be as many as 5 million species of insects.
crustacean