This means that dinosaurs adapted to a high oxygen and carbon dioxide environment, while the modern environment has lower oxygen and carbon dioxide levels, making it difficult for dinosaurs to adapt to such a gaseous environment. If they were truly resurrected in modern times, they would absolutely not grow to their once gigantic size. But if they did grow to their ancient gigantic size, they might experience breathing difficulties and respiratory diseases. In severe cases... they might suffocate on the spot.
Although Wang Ye's physique is not as large as a dinosaur's, his muscle density is extremely high. If he were to completely release his muscles and adjust the muscle density to a normal level, Wang Ye might be able to reach a size similar to that of a small dinosaur.
So this is his bottleneck.
