Li Lechen heard Wang Jin's footsteps when he first arrived in the community, and also heard him inquire about the unit where his home was located in the community, so he was naturally not surprised at all when he knocked on the door at this time.

So when Wang Jin came in, Li Lechen only paused slightly, and continued to crack on the keyboard.

Zhou Mi welcomed Wang into the living room, and was about to call Li Lechen, but was stopped by Wang Jin: "Don't disturb him." ”

Then the two entered the study together, and sure enough, they saw Li Lechen seriously facing the computer.

Wang Jin nodded happily.

Zhou Mi looked up to the sky and rolled her eyes.

After Li Lechen came back from the hospital, he saw him either sleeping or playing games anyway, and he was probably preparing to take a leave of absence.

It's really a waste of my efforts, I have taken notes carefully in the past two months, and I have even prepared an extra test paper for the test papers I usually do.

Seeing Wang Jin's appearance, Zhou Mi didn't expose it, and watched Wang Jin sit down on the small sofa in the study, so she followed him and sat next to him.

I saw Wang Jin take out a stack of paper from his arms, on which he printed a small half of a paper in No. 3 imitation Song, to be precise, entitled "The Impact of Human Activities on Biological Evolution".

Zhou Mi was a little puzzled.

It looks quite profound, this is to come over to discuss academics with Li Lechen? What is the relationship between the two of them? But it seems that the last time Wang Jin gave a lecture, Li Lechen went to listen to it for the first time. Maybe it really matters.

Wang Jin didn't explain anything, but became excited again when he saw this content again. Although he had read it countless times, he couldn't help but read it again, and at the same time, he didn't forget to point out some key points to Zhou Mi.

Although Zhou Mi had all kinds of speculations, her eyes still fell on the paper.

"The evolutionary effects of human activities are already being felt in plants and animals. Some are the result of global human intervention, climate change, and some are the result of localized pollution and increasing urbanization......"

“...... Since ancient times, fishermen have followed the rule of catching big fish and releasing small ones. However, there is one thing that has been overlooked, that is, small fish do not grow small not necessarily because of their short growth time, but because their own characteristics determine that they cannot develop into normal individual large fish. This is an inadvertent manual selection of "survival of the fittest" again and again, so that some fish species of worse and worse quality are retained......"

“...... In European waters, fish are also getting smaller and smaller. It has been observed that in the past decade or so, the size of some fish has even decreased by half, the proportion of small fish in the waters is gradually increasing, the various organs of fish are also generally shrinking, and the number of fish has decreased by 60%. Pessimists believe that 29 percent of the species currently caught are caught less than 10 percent of the highest level. The author believes that if this development continues, the global fishing industry will completely collapse by 2056. ”

Wang Jin's finger stopped here and said: "I have been predicting 2048, but his forecast is 12 years later than mine, but after I recalculated later, I found that I missed the protective measures that the government will take after the rapid depletion of fish stocks, so it is absolutely appropriate to add more than 12 years." ”

“？？？”

Zhou Mi didn't understand for a while, and was stunned for a long time and asked, "You said that these were written by Li Lechen?"

"Of course!"

Wang Jin looked proud, as if Li Lechen was already his proud protégé.

Zhou Mi was speechless for a moment, and twitched the corner of her mouth: "Could it be a search on Baidu?"

After that, Zhou Mi immediately got up to see what Li Lechen was doing with the crackling and typing on the computer keyboard.

Nine times out of ten, you're playing the game!

As a result, he was pulled by Wang Jin again: "Please don't disturb him, it's a terrible thing to be interrupted." ”

Zhou Mi was helpless.

She has been with Li Lechen for the past few days, and she hasn't seen him do anything serious in the past few days since she came back, but because of physical reasons, everyone has connived. If you are talking about what kind of academic you are doing, it is absolutely impossible.

I just don't know why this Dr. Wang Jin is so sure.

There is no way, people with white hair, and a doctor from a national scientific research institution, came to Li Lechen's house so excitedly, and took an article that he copied from Baidu, I have to think that Li Lechen is a genius, plus Zhou Mi is in someone else's house, so naturally I can only follow.

Wang Jin continued to admire the half of the paper.

“...... Urbanization is perhaps humanity's most obvious impact on the planet. The flora and fauna that grow in cities are constantly evolving to adapt to the environment that humans have modified......"

“...... In the city there are annual chrysanthemums, whose seeds grow larger and heavier than their counterparts in the wild. Previously, the seeds of this chrysanthemum were spread by the wind and scattered everywhere with the wind, and the lighter quality seeds were an advantage, but in the city it was the opposite. If the wind blows farther away, it is likely to fall on concrete or asphalt at a distance and will not be able to grow. When the seeds become heavier, they can fall directly into the soil around the plant, which is conducive to the continuation of the population. There are also weeds that grow in the crevices of the city's brick and stone roads, which are no longer scattered in the wild. It is foreseeable that by around 2100, more than 80% of plants will no longer produce seeds......"

Wang Jin again focused on the prophetic date.

"It's a bit of a, plants are extinct without producing seeds, less than a hundred years, it's too exaggerated. ”

Zhou Mi didn't know why, but she looked at it and saw it.

Wang Jin thought for a while and sighed: "The theoretical basis for this prediction is very sufficient, but the prediction of time is ...... I don't know what it's based on. ”

"It must have been a guess. Zhou Mi asserted.

"I don't think so, some people thought that this situation would not take a hundred years......"

"Ugh!"

Suddenly, Li Lechen let out a sigh.

Zhou Mi hurriedly got up and said worriedly, "What's wrong?"

"I didn't eat the chicken again!"

Li Lechen was indignant and restarted the game.

Zhou Mi's face darkened suddenly, and she was really playing a game.

Looking at Wang Jin, he was a little confused. Didn't get any chicken? What do you mean?

Oh~~~ That's right!

Wang Jin's gaze fell back to the paper.

“...... Not only plants are evolving, but animals are also being forced to evolve due to urbanization, and the typical case is the so-called 'industrial blackening phenomenon'...... The color change alone may not be much, but scientists have found even more alarming changes. In the Hudson River in the United States, there is a fish called Atlantic whiting. The Hudson River is home to many toxic contaminants due to sewage discharges, and in just a few decades, Atlantic whiting has evolved resistance. It can store toxins in fat without causing damage to itself. This is analogous to insects becoming resistant to insecticides and bacteria becoming resistant to antibiotics......"

"This paragraph must have been copied on Baidu!"

Zhou Mi immediately pointed out.

Wang Jin nodded rarely.

However, there is a lot of copying of articles in the world, and this kind of example or something is naturally based on existing achievements, otherwise they are all innovations, and the articles are not like articles.