ElI5 why dinosaurs were so big and now everything on land is rather small
In: Biology
Like birds (which remember are dinosaurs themselves) they had more efficient lungs with airsacks throughout their body and bones. Their lungs allowed them to get more oxygen to their body and the airsacks combined with hollow bones made their bodies lighter. Scientists believe this is why they were able to get so big in land (although the blue whale today is bigger than any dinosaur)
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