...first glance, sea stars and other echinoderms...
...radial symmetry. Sea stars and most other...
...classes: Asteroidea (sea stars), Ophiuroidea (brittle stars),...
...stars), Ophiuroidea (brittle stars), Echinoidea (sea urchins...
...lilies and feather stars), Holothuroidea (sea cucumbers),...
...(sea daisies). Sea stars have multiple arms...
...not suction. Sea stars use their tube...
...own shell. Sea stars and some other...
...remains attached. Brittle stars have a distinct...
...feet of brittle stars lack the flattened...
...found in sea stars but do secrete...
...chemicals. Like sea stars and other echinoderms,...
...other echinoderms, brittle stars can use their...
...grip substrates. Brittle stars move by a...
...arms. Some brittle stars are suspension feeders,...
...stalks, and feather stars crawl using their...
...lilies and feather stars use their arms...
...group of sea stars. Phylum Chordata: The...

...radial motion of stars. Define excitation and...
...18. The hottest stars will look white...
...and the cooler stars will look red....
...would imply the stars are moving away...
...dark skies, observe stars of varying surface...