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Used to - Natural Selection Evolution
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Dinosaurs used to be the Dominant terrestrial vertebrates.
True
Whales used to walk on land.
True
Butterflies used to be nocturnal.
True
Sharks used to exist before the dinosaurs.
True
Penguins used to fly, but evolved to become flightless.
True
Cucumbers used to be spiky.
True
Bananas used to have large seeds.
True
Crocodiles used to be herbivores.
False: Crocodiles have always been carnivores.
Humans used to have tails that were visible outside their bodies.
False: While humans have a vestigial structure (the coccyx) indicating a tail-like ancestor, they never had externally visible tails.
Roses used to be blue in color.
False: Natural roses have never been blue; the blue roses available today are the result of genetic modification or dyeing.
Tigers used to be domesticated pets.
False: Tigers have never been domesticated animals throughout human history.
Rabbits used to be predators.
False: Rabbits have always been prey animals; their digestive systems and behaviors are adapted to a herbivorous lifestyle.
All dinosaurs used to be carnivores.
False: Dinosaurs had a variety of diets; many were herbivores or omnivores.