Which two structures perform similar functions in cnidarians and sponges?

spicules in cnidarians and pores in sponges
tentacles in cnidarians and nerve cells in sponges
stinging cells in cnidarians and cilia in sponges
gut in cnidarians and collar cells in sponges

that is true   : ) hope this you

the missing space is phylum

here is the answer

water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering. weathering is the breaking down or dissolving of rocks and minerals on earths surface. once a rock has been broken down, a process called erosion transports the bits of rock and minerals away.