If 恐龙 were cold-blooded, like today's reptiles, they would have been slow 或者 inactive in cold conditions.
If 恐龙 were warm-blooded, like birds and mammals today, they would have benn able to stay warm and active in cold conditions.
Experts once believed that all 恐龙 were cold-blooded, but today there is much disagreement.
Some evidence for warm-bloodedness comes from the structure of fossil bones.
The structure of some dinosaur 识骨寻踪 is 更多 like that of warm-blooded creatures than that of reptiles.
Some small meat eaters may have evolved into birds. As birds are warm-blooded, these 恐龙 may have been, too.
If 恐龙 were warm-blooded, like birds and mammals today, they would have benn able to stay warm and active in cold conditions.
Experts once believed that all 恐龙 were cold-blooded, but today there is much disagreement.
Some evidence for warm-bloodedness comes from the structure of fossil bones.
The structure of some dinosaur 识骨寻踪 is 更多 like that of warm-blooded creatures than that of reptiles.
Some small meat eaters may have evolved into birds. As birds are warm-blooded, these 恐龙 may have been, too.
