Members of the phylum Echinodermata move using a(n) ____________ ...

[chads108]

Members of the phylum Echinodermata move using a(n) ____________ ____________ system and include the sea
  stars, brittle stars, sea urchins, and sea cucumbers. Fill in the blank(s) with the appropriate word(s).

Question 2

The most successful of Earth's animal phyla are the ____________, which include the lobsters, shrimp, crabs, krill,
  and barnacles. Fill in the blank(s) with the appropriate word(s).

[mariahkathleeen]

Answer to Question 1

water vascular

Answer to Question 2

Arthropoda

[chads108]

Great answer, keep it coming

[Animal_Goddess]

Thanks for the timely response, appreciate it