|
Some swifts use their gummy ____ to build their nests.
|
amphibian
|
|
Unlike reptiles, amphibians can breathe through their ____.
|
backbone
|
|
All insects have a three-part body: head, ____, and abdomen.
|
camouflage
|
|
Some animals use ____ to blend into the background.
|
omnivore
|
|
Vertebrates are animals that have a ____.
|
saliva
|
|
The ____ of a blue whale can weigh more than an elephant.
|
skin
|
|
Any animal that eats both plants and animals is an ____.
|
thorax
|
|
Although born in water, an adult ____ can live in water or on land.
|
tongue
|
