"The bigger the body, the more consumed?" Shuimu murmured to himself thoughtfully.

When asked about this, it was not that Mizuki was particularly concerned about the progress of Yumizu Shino's practice. His parents were concerned about the learning of family secret techniques. What Mizuki cares about was the problem that Yumizu Shino said was too much consumption.

In the ninja world, there is a problem that has been ignored by everyone for a long time. Even in such an environment, Mizuki has always been attracted by other things and has not paid special attention to these issues. Although he felt something was wrong, he did not care too much about it.

This problem that cannot be ignored is that due to the influence of chakra, the chances of organisms mutate in the ninja world are very high, and wild animals are violent and large-scale. It is not uncommon to give birth to some super-large creatures that are obviously beyond the tolerance of nature. As for those sensiblely huge creatures, they did not attract the attention of ninjas, and they were only regarded as psychic beasts and combat partners.

It is true that the conditions in the ninja world are enough to give birth to these super intelligent lives. But is this really a normal phenomenon? Smart creatures are not the same as smart races. As long as Shuimu is willing to spend some money, he will greatly transform his giant bear Bo Taijun and make it a giant bear smarter than ordinary humans. However, it is almost impossible to create a smart giant bear race that can survive in nature.

Among the three great spiritual beast holy places, these magical places are breeding two intelligent races, giant toads and giant snakes.

The slug immortals in the wet bone forest are too special and mysterious. Only Wanshes often appear in front of people in the Dragon Cave, and there is too little information there, and the specific situation is unknown. There are many toads appearing in Miaomu Mountain, including the three brothers Toad Wentai, Toad Jian, Toad Guang; and the two brothers Toad Dragon and Toad Ji are both the sons of Toad Wentai; there are also Shima Immortal and Shenzuo Immortal on the top, and the Toad Ball at the top. Others include Iron Arm Toad, Scroll Toad, Rock Toad, Toad Zhong, Toad Li, etc. They are obviously not individual intelligent creatures, but a smart race.

As soon as he thought of this, Shuimu stood up and said to Xiaochun beside him: "I'm a little anxious to eat. I'll pour some water and drink it. You can wait for me for a while and I'll go."

After saying that, Shuimu did not attract anyone's attention and walked quietly into the backstage.

...

In an empty and deserted lounge, Shuimu was thinking about it with a water cup, and a figure walked in with the same shape, then closed the door with his backhand.

"You heard it too? Do you have any thoughts?" Shuimu asked with a trembling voice.

"I probably won't have too different opinions as you think."

Shuimu frowned, looked at the clone, picked up the pastry that Shuimu put in the small bamboo basket on the table and ate it. "It's really delicious!"

"If my guess is true, it would be too desperate."

Shuimu clone ate and said, "A leaf is blinding and cannot see Mount Tai. In fact, we should have noticed it a long time ago."

"Do you still remember some biological research results in your previous life? The so-called archaeologists who dig fossils everywhere every day have unearthed many insect fossils from ancient times, and found that the insects at that time were much larger than modern times. A millipede with a matchstick might have been larger than a snake hundreds of millions of years ago. Do you know what this means?"

After thinking about it, Shuimu Body replied: "There were indeed many large organisms in ancient times, but they were mostly the result of climate change."

"Climate?" Shuimu clone smiled and said, "Maybe, there are some glacier melting, sea level rise, natural disaster theory, volcanic eruptions, super-large meteorite impacts on the earth, etc., which are difficult to prove. However, one thing is clear that in ancient times, the oxygen content in the air on the earth was much higher than that in modern times!"

"Do you know what a higher oxygen content means? More efficient aerobic breathing can produce more energy and support greater body consumption, which means that the body can grow bigger. Similar to the ninja world, what have you discovered?"

"The amount of chakra, or natural energy, is constantly decreasing, which will cause a fatal blow to large organisms because the external environment that supports their normal survival has changed."

This conclusion is not difficult to draw, and the ontology can easily answer it.

"Like Toad Dragon and Toad Yoshi, when they were tadpoles, they were easily summoned by Naruto Uzumaki's psychic technique; as they grew up, their appearance time became shorter and shorter; their father Toad Futa was only psychic when a fierce battle occurred, and the ten thousand snakes in the Dragon Cave were roughly the same; Shima Immortal and Shenzu Immortal, there was no major matter of life and death that was essentially not true; Toad Immortal and Snake Immortal, in the past there were legends that they were active in the ninja world, but now they would not appear in the ninja world at all; as for the slug Immortal who was too big to guess, the chakra stored by Tsunade and Sakura could not psychic them out intact. If you think they were not necessary, why did they grow up so big? Do they all like to stay in the so-called holy land and don't want to appear?"

Since we have already thought of this level, we cannot avoid some problems.

Competition and balance between wolves and sheep on the grassland. If a wolf runs slower than the slowest sheep, it will inevitably starve to death; if a sheep cannot run the fastest wolf, it will most likely become prey and be eaten.

This is the ecological balance maintained by nature. Competitors always maintain the most efficient level of "just enough". If the wolf runs as fast as a rocket, it will either be exhausted to death due to excessive consumption and cannot supplement its physical strength even if it eats mutton, or it will eat all the sheep and eventually starve to death.

"With such a big toad, there are naturally large insects that can feed it, as well as big snakes and water birds that eat toads, and giant eagles that eat big snakes and water birds."

"No matter how big the slug is, there will be no shortage of super-large hedgehogs or other creatures that feed on them, otherwise the ecological balance of nature will collapse due to this accident."

"But now, we can't find any trace of them in the ninja world. Perhaps our ninja ancestors were killed and eaten all of them and were exterminated!"
Chapter completed!