I really didn’t raise a dragon

Chapter 73 The Earth 300 Million Years Ago

"Do you know what the current oxygen concentration percentage of our earth is?"

The geography teacher continued.

He glanced around the crowd and then continued speaking.

"Twenty-one percent."

"But 300 million years ago, the oxygen content of the earth was very high, reaching more than 30%."

"The concentration of oxygen will affect the muscle growth of organisms."

As he spoke, the PTT picture on the projection also began to change.

"The respiration rate of organisms will increase, they will eat more food, and their bodies will become stronger."

"And the ones most affected by oxygen content are arthropods."

"Of course, the earth's oxygen content has always been variable, and it is not necessarily a problem of oxygen content."

he said with a smile.

"And now, there are still very huge creatures on our planet."

"For example, the blue whale."

"It's the only thing we know about, the largest creature in the world."

"But this kind of creature is also gradually decreasing."

"There are also some countries that hunt secretly."

When the geography teacher said this, he shook his head and sighed.

"Okay, let's get down to business."

"The thing captured in this picture may be an eel."

He pointed at the picture and said immediately.

"eel?"

Ye Qianqian was stunned for a moment while listening to the geography teacher's words.

She originally thought it was a snake.

"The teacher also made guesses based on his knowledge of marine life and the outlines."

The geography teacher looked at Ye Qianqian and smiled immediately.

"Some classmates may ask, is there really such a big eel?"

"Don't be surprised. Many organisms have mutated over the years. This is not impossible."

Listening to his words, everyone became more and more curious at this time.

Today's geography class seems a little different from the previous geography class.

Soon, the get out of class bell rang.

The students were all listening in rapt attention at this time, and they only reacted now.

"Okay, get out of class is over."

"I still want to remind all students not to go near the seaside."

The geography teacher put away the teaching materials and said to the students when he was talking.

He also walked out of the door at this time, then turned and left the classroom.

"Tell me, were the animals on earth really this big before?"

"It's very possible. I heard that some of the prehistoric creatures were very huge!"

"The history of human beings is still too short compared to the earth. There may be many creatures that we have not discovered yet!"

"..."

The students also began to discuss with each other at this time.

Su Mengyao was thinking while turning the pen in her hand.

"If there are really mutated creatures, should we go and see them?"

Ye Qianqian lowered her voice at this time and whispered into Su Mengyao's ear.

"no."

Su Mengyao shook her head.

"Marine life, we can't deal with it."

She said it a little helplessly now.

Creatures in the ocean are almost invincible as long as they are in the sea water.

They couldn't handle it at all.

"But we have to pay attention to whether Black Moon will stop the people over there before going over there."

Su Mengyao turned on her mobile phone while making a sound at this time.

Some surveillance images were played on the mobile phone. It was obvious that these images were of the men dressed in black.

Through the intelligent system she compiled, she directly copied all their influences in the city.

And it is still being collected automatically.

After taking it out and looking at it for a few times, Su Mengyao frowned slightly.

These people seem to be doing something terrible.

"Lao Ma, the heavy rain has stopped. How is the special operations team doing?"

At this time, Captain Li walked into the [Mysterious Creature Research Institute].

It started raining heavily last night. Today, although there is still rain, it is already light rain.

"Still can't be contacted."

"The last time we were attacked by the Black Moon Organization, many members of the special operations team are recovering from injuries. Now the main members are performing tasks in other cities."

Lao Ma also said with a little headache.

"so slow?"

"The picture of the mutated creature was taken today."

"It's just an outline."

Captain Li also rubbed his eyebrows at this time and said with a slight headache.

The current situation is indeed getting worse and worse.

As for the Cancer, we still don’t know how it was killed in the end, and whether there was a second Cancer.

Now along the coast, this situation has occurred again.

It just happened one thing after another.

"Well, blocking is worse than sparing. If this picture is forcibly deleted, it will cause panic."

"However, if this picture is allowed to spread continuously, people will only think that it is a pornographic picture."

Lao Ma said loudly while studying things.

"That makes sense."

Captain Li also nodded in agreement.

"Lao Ma! Captain Li! There is news from the special operations team!"

At this moment, Yang Yang, who was on the other side, suddenly said excitedly.

"Reply the message!?"

Listening to his words, the pupils in Lao Ma and Captain Li's eyes also shrank slightly.

At this time, I took a look at the computer over there and saw a message from the special operations team.

"An atavist has been sent to provide temporary support. Next, other atavists will come."

They looked at the email reply from the special operations team and breathed a sigh of relief at this time.

"This time, it can relieve some stress."

Lao Ma couldn't help but say something at this time.

During this period, due to the emergence of mutated creatures, all the pressure was transferred to Lao Ma and Yang Yang in the mysterious creature laboratory.

After all, they are the only ones who are preparatory members of the special operations team and have also been trained with some relevant information.

"By the way, on the coastal side, let the people from the federal army pass first. This time, there may be creatures more terrifying than giant crabs."

As Lao Ma spoke, he looked at the printed photo locked on the wall.

This photo was clearly the outline of the terrifying creature that that person had taken.

"good."

"get out of class is finally over."

By this time, the morning classes had been completed.

The two of them walked on the wet ground holding umbrellas.

"Eh? Teacher Sun?"

Looking carefully at this time, Ye Qianqian saw the geography teacher walking in front.

He walked in the rain without an umbrella, letting the raindrops fall on his cheeks.

He seemed to be enjoying himself very much.

Su Mengyao also glanced at him.

Soon, the geography teacher also left here.

"Does it feel wrong?"

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