"What will happen if a cockroach is enlarged by a hundred times in proportion?"

On the podium, the teacher with sparse hair looked at the classroom with bright eyes, wanting to see what the students below said.

"It will steal chicken!" Almost as soon as the professor finished speaking, such a voice came from the corner of the classroom.

"Hahaha……"

It immediately caused laughter from the students in the class.

After hearing this, the kind-faced teacher was not angry. He smiled for a while and nodded, "This is putting your thoughts into cockroaches. OK, who has any other thoughts?"

"Cockroaches have become a hundred times bigger, and they are several meters tall. I think a chicken is definitely not enough to eat!"

The students burst into laughter again.

The teacher nodded and smiled, "No, keep going!"

"A cockroach becomes larger, and the gravity it bears will also increase. I think it may be crushed to death by gravity!"

"That's not necessarily the case. It's larger in proportion, and the skeleton can definitely hold on to gravity!"

“…”

The teacher was relieved to look at the students who were actively speaking below and said, "There is a concept in biology called the 'alien-speed growth relationship', which refers to a quantitative relationship between biological characteristics such as behavior, shape, and required energy and body shape. That is to say, organisms will undergo quantitative changes as the body shape changes in the organism, but this change is not equal proportion!"

While he was talking, he started writing formulas on the blackboard with chalk.

"This concept was first proposed by Julian Huxley in 1932. Here, it can be expressed by a mathematical formula: e=70m^3/4"

"The shape and body shape of a living organism grow linearly, and this relationship is determined by the square-cube law."

"That is, when the length of an organism is twice, its surface area will be four times that of its original size, and its volume and mass will be eight times that of its original size..."

Du Gang was distracted when he heard this. To be precise, he put his spirit on a virtual panel that suddenly appeared in his mind.

【Du Gang】

【First-level Ancient God】

Ancient God, a species that can grow and grow indefinitely!

In theory, as long as the energy is sufficient, you can pick stars and swallow the moon and grow to a size comparable to the planet...

Under this description, there is a property panel.

The position of the first line, called the base of the first-level ancient god, has been successfully lit up. In the brackets behind it, there is a series of dim notes: (The source energy required for upgrading is 10,000 points.)

"The foundation of the ancient god?"

Almost as Du Gang thought about this, a flow of information emerged directly.

"The foundation of the growth of ancient gods is the upper limit of the first level to be ten meters high, which can ignore the negative impact of the human body system after transformation. The current available time per day: ten minutes."

[When first-level perfection is completed, the transformation time limit is lifted]

The attribute panel is more like a skill tree, with the base of the ancient god at the top, and below it, there are eight branches in the second row.

The nervous system, motor system, circulatory system, respiratory system, digestive system, endocrine system, urinary system, and reproductive system.

At this moment, the eight branches in the second line were all dull. Du Gang understood that this was the reason why it was not lit up.

And behind each branch, there is a note: (The source energy required to activate is 100 points.)

At the same time, he had a vague feeling in his heart that as long as he thought about it, he could transform into a "giant".

However, he resisted this impulse and did not dare to try in the classroom, but opened his eyes.

At this time, the biology teacher was still giving lectures.

"If the cockroach weighs only one gram and the volume is 1×1×1=1cm---3, then it only needs to bear 1 gram of weight per square centimeter of its cross-section."

"After magnifying it by a hundred times, the volume becomes 100×100×100=100000cm3. If the density does not change, its weight will increase to 100000 grams. Although its cross-sectional area has also increased accordingly, it has only increased to 10000cm2. What does this mean? It means that the weight required to bear on the cross-section of each square centimeter has increased by a hundred times!"

"So, if this cockroach expands by a hundred times, it will soon be crushed to death by its own weight!"

Hearing this, Du Gang frowned and raised his hand to ask, "Teacher, how can he survive after he grows bigger?"

The teacher smiled and wrote four words on the blackboard: Movement System.

"What I said is that it will be crushed to death by its own weight, just the impact of the exercise system on it. In addition, the impact of other systems on it must be added..."

"According to the square-cube law, when cockroaches become larger, the oxygen required also increases significantly, and the increase in the surface area of ​​the exchange gas part cannot keep up with the volume growth..."

"So, on Earth, if a cockroach becomes a hundred times bigger, then in addition to being crushed to death, he will also die of hypoxia..."

Immediately afterwards, the teacher wrote down the four words "respiratory system".

Du Gang was stunned and subconsciously murmured: "Is there a way to solve the problem of hypoxia?"

The teacher was very pleased to find out that he was fascinated and nodded, "It's not impossible. If this cockroach adds more trachea and expands the amount of oxygen absorbed, it will survive..."

"In addition, if the oxygen content contained in the earth's air increases, it can also provide it with more vitality..."

"Scientists have found that in the dinosaur era, organisms were very huge. One of the reasons may be that the oxygen content in the atmosphere is very high..."

At this time, other students asked, "Teacher, if our current oxygen content becomes higher, can I still grow taller?"

The teacher narrowed his eyes and said with a smile: "If you don't consider the issue of oxygen poisoning, and you happen to be in the development stage and your oxygen content increases, then you are indeed likely to grow taller under the influence of this environment..."

"In this environment, plants will grow faster, bigger and taller than animals!"

"Of course, in this oxygen-rich environment, our next generation will be taller and bigger!"

Speaking of this, the teacher spread his hands and smiled and said, "Students, this is the end of today's class. Next class, we will talk about the reproductive system and urinary system..."

"Reproductive system...hehehe..." The students in the audience all laughed with red faces.

"Here, let me talk about another question, what are germ cells?"

"Please check the textbook after you go back and learn about germ cells. I will ask another interesting question for everyone to answer in the next class..."

"Okay, get out of class is over!"

The students immediately stood up and bowed, "Goodbye teacher!"

The teacher nodded and turned around and left the classroom.

Not long after the teacher left the classroom, a student suddenly shouted: "Look at the headlines of your phone!"
Chapter completed!