Some groups of dinosaurs are known to have run very rapidly, a deduction based on measuring their stride and comparing this to body size. They also lived in arctic regions. These facts suggest to some that these dinosaurs were warm-blooded. This supports the theory that modern ________ are direct descendants of the dinosaurs.

Question

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The theory that birds are direct descendants of dinosaurs is supported by evidence such as the ability of some dinosaurs to run rapidly and live in arctic regions, suggesting they were warm-blooded, traits more closely associated with birds among the options provided.

Some Groups of Dinosaurs Are Known to Have Run Very