1- what are the two most numerous terrestrial groups of arthropods? which of these contains many flying species?
2- which arthropod phylum is the dominant marine group today?
3- who were the dominant marine arthropods of the Paleozoic era?
4- what is chitin?
5- how did exoskeleton help arthopods adapt to land?
6- Hexapoda is another name for_____.
7- what are trachea?
8-how do spiders consume their prey?
9- why would it be literally incorrect to call spiders " hexapods"?
10- which group(s) is (are) predaceous and carnivorous, centipedes or millipedes?