Benchmark Advance Vocab unit 1 week 2

Front

toxins

Back

poison

Front

Scales

Back

Small, tiny bone plates covering reptile skin.

Front

mucus

Back

a thick liquid

Front

Undercoat

Back

Layer of fur against an animal's skin

Front

Cold-blooded animals with soft-shelled eggs and dry, scaly skin.

Back

Reptiles

Front

Material in nails, hair, scales, and feathers

Back

keratin

Front

Feathers covering a bird's wings and tail aiding flight.

Back

Flight feathers

Front

Long stiff hairs that protect from rain and cold

Back

Guard layer

Front

amphibians

Back

cold blooded animals that start life with gills and develop lungs later.

Front

Contour feathers

Back

Top layer of feathers that give a bird its shape and color.