scientists find the fossilized remains of a dinosaur in the bottom rock layers of a research site. they find the fossil of a mammal in the middle rock
layers. what can be concluded from this evidence?
a mammals lived on earth before dinosaurs
b dinosaurs lived on earth before mammals
c dinosaurs and mammals lived on earth at the same time
d mammals caused the extinction of the dinosaurs
Answers: 2
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scientists find the fossilized remains of a dinosaur in the bottom rock layers of a research site. t...
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