a notochord is a flexible rod that supports a chordates
An example of a chordate is
A example of an endotherm is a
Fish swim using
what does the internal skeleton of a vertebrate do
Most fish have this type of fertilization (there are 2 correct answers, chose 1)
Which is not one of the major groups of fishes
A ___________ is a vertebrate that spends its early life in water
a tadpole is the larve of a
A reptile
Layers of clay, sand, mud or silt harden and become
Paleontologists are scientists who study fossils
Amphibians obtain oxygen through gills and have scales
a bony fish uses its gills to stabilize its position in water
an amniotic egg is a characteristic of reptiles
the kidney, bladder, and cloaca are part of the
the heart, lung, and blood vessels are part of the
the brain, spinal cord, and sensory organs are part of which system
the ovaries and testes are part of which system
the stomach, intestines, liver, spleen, and gallbladder are part of which system
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