| Frogs, newts, salamanders, and toads are classified as ____. |
amphibians |
| Hermit crabs carry salvaged empty ____ for protection. |
annelids |
| The largest and most complex marine forms of algae are ____. |
antlers |
| Earthworms and leeches are ____ (segmented worms). |
echinoderms |
| Most reptiles are thick-skinned and are covered by ____. |
insectivores |
| Hedgehogs, moles, and shrews are ____. |
scales |
| Unlike female elk, some female caribou grow ____. |
seashells |
| Sand dollars, sea urchins, and starfish are ____. |
seaweeds |
