A．mammalB．reptileC．animalD．creature

The word "quadrupeds" in paragraph 6 is a technical word forA．creatures with two feet.B．cr

A．animalB．animalsC．creaturesD．creature

These creatures are so tiny that they can not always be seen with the ______ eye.A．bareB．n

Which creature is higher in the food chain than tadpoles or frogs？A．Insects.B．Algae.C．Eagl

Why do most Americans know the garter snakes？A．People raise these creatures.B．They live in

What is NOT true about the newly discovered fossils？A．The creature in fossils lived about