|Whales and dolphins are not fish. They are marine ____.
|All insects have a three-part body, six legs, and a pair of ____.
|Unlike hawks, falcons have white ____.
|Unlike amphibians and reptiles, all mammals have ____.
|The favorite food of sea otters in kelp forests is ____.
|Workers are female bees, whereas ____ are male bees.
|Amphibians have gilled aquatic ____ and air-breathing adults.
|Plants convert carbon dioxide into ____ (such as starch).