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How energy from food passes from one living thing to another is called a ________.
food chain
A person who studies life in the past is a _______?
paleontologist
_______ is a very long amount of time.
Era
The __________ is called the "Age of Reptiles."
Mesozoic era
The __________ is called the "Age of Mammals."
Cenozoic era
The oldest plant and animals fossils found are from the _________.
Paleozoic era
Many living things could not live when Earth changed. They became ____________. ___________means to die out.
extinct
Living things that are close to becoming extinct are ___________.
endangered
A dinosaur's footprint is a kind of _________.
fossil
Which dinosaur is a meat-eater? Allosaurus, Iguanodon, or Ankylosaurus?
Allosaurus
Animals need _________ where they can be safe from their enemies.
shelter
Which animals is close to becoming extinct? Whales, West Indian manatees, or elephants.
West Indian manatees
