"What would happen if you magnified a cockroach a hundred times?"
On the podium, the teacher with thinning hair looked sharply at the classroom, trying to see what the students below were saying.
"It can steal chickens!" Almost as soon as the professor finished speaking, a voice came from the corner of the classroom.
"Hahaha… "
It immediately caused a roar of laughter from the students in the class.
After hearing this, the kind-faced teacher was not angry. He laughed for a while and nodded: "This is substituting your thoughts into the cockroach. Okay. Who has any other ideas?"
"The cockroach has become a hundred times bigger and is now several meters tall. I think it will not be enough to eat a chicken!"
The students laughed again.
The teacher nodded and said with a smile: "Not bad, continue!"
"As the size of the cockroach increases, the gravity it bears will also increase. I think it may be crushed to death by gravity!"
"That's not necessarily true. It's proportionally larger. The frame can definitely withstand gravity!"
“…”
The teacher looked at the students who were actively speaking and was very pleased, and said: "There is a concept in biology called 'allometric growth relationship', which refers to the relationship between biological characteristics such as behavior, shape, and required energy, and body size. There is a quantitative relationship between them, that is to say, organisms will change quantitatively as their body size changes, but this change is not proportional!"
As he talked, 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 size of living things grow linearly, and this relationship is determined by the square-cube law."
"That is, when the length of an organism doubles, its surface area will be four times the original, and its volume and mass will be eight times the original..."
Du Gang lost his mind after hearing this. To be precise, he focused on a virtual panel that suddenly appeared in his mind.
[Du Gang]
[First Order Ancient God]
Ancient God, a species that can grow infinitely!
Theoretically, as long as there is enough energy, one can reach the stars, swallow the moon, and grow to the size of a planet...
Below this description is a properties panel.
The position on the first line, called the First Order Ancient God's Foundation, has been successfully lit. In the brackets behind it, there is a string of dim notes: (The upgrade requires 10,000 energy points.)
"The foundation of the ancient gods?"
Almost as soon as Du Gang thought about this, a stream of information emerged directly.
"The basis for the growth of ancient gods, the upper limit of the first level is ten meters in height, which can ignore the negative effects on the human body system after transformation. The current available time per day is: ten minutes."
[After completing the first level, the transformation time limit will be lifted]
The attribute panel is more like a skill tree. The top one is the Ancient God's Foundation, and below it, in the second row, there are a total of eight branches.
Nervous system, motor system, circulatory system, respiratory system, digestive system, endocrine system, urinary system, reproductive system.
At this moment, the eight branches of the second row all looked dim. Du Gang understood that this was the reason why they were not lit up.
Behind each branch, there is a note: (One hundred points of energy are required for activation.)
At the same time, he had a vague feeling in his heart that as long as he wanted to, he could transform into a 'giant' now.
However, he resisted this urge and did not dare to try it in the classroom. Instead, he opened his eyes.
At this time, the biology teacher was still giving lectures.
"If this cockroach weighs only one gram and its volume is 1×1×1=1cm, then it only needs to bear a weight of 1 gram per square centimeter of cross section."
"After magnifying it a hundred times, the volume becomes 100×100×100=1000000cm. If the density does not change, then its weight increases to 1000000 grams, although its cross-sectional area also increases accordingly. But it only increased to 10,000cm. What does this mean? The weight required per square centimeter of cross section has increased by a hundred times!”
"So if this cockroach were to expand a hundred times, it would be crushed to death by its own weight very quickly!"
Hearing this, Du Gang frowned, raised his hand and asked: "Teacher, how can he survive after his size increases?"
The teacher smiled and wrote four words on the blackboard: Movement System.
"When I say it will be crushed to death by its own weight, it is only the impact of the movement system on it. In addition, the impact of other systems on it must also be added... "
"According to the square-cube law, as cockroaches grow larger, the amount of oxygen they need also increases significantly. The increase in surface area of the gas exchange parts cannot keep up with the increase in volume..."
"So, on Earth, if a cockroach becomes a hundred times larger, it will not only be crushed to death, but also die of lack of oxygen..."
Immediately afterwards, the teacher wrote the words "respiratory system".
Du Gang was stunned and murmured subconsciously: "Is there a way to solve the hypoxia problem?"
The teacher noticed his entranced look and was very pleased. He nodded and said, "It's not impossible. If this cockroach adds more tracheae and expands the amount of oxygen it absorbs, it can survive..."
"In addition, if the oxygen content in the earth's air increases, it can also provide it with more vitality..."
"Scientists have found that in the age of dinosaurs, creatures were very huge. One of the reasons for this may be that the oxygen content in the atmosphere was very high..."
At this time, another student asked: "Teacher, if our oxygen content becomes higher now, can I still grow taller?"
The teacher narrowed his eyes and said with a smile: "If you don't consider the problem of oxygen poisoning, and you happen to be still in the developmental stage and the oxygen content increases, then it is indeed possible for you 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!"
At this point, the teacher spread his hands and said with a smile: "Students, that's it for today's class. In the next class, we will talk about the reproductive system and the urinary system..."
"Reproductive system... Hehehehe..." The students in the audience all snickered with blushing faces.
"Here, let me ask another question, what are germ cells?"
"Students, please go back and check the textbook to 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, turned and left the classroom.
Not long after the teacher left the classroom, a student suddenly shouted: "Look at the headlines on your phone!"
(End of chapter)