Chapter 867: The King of Speed

Bifang used two parallel sticks to take the ostrich eggs out of the fire pit intact.

The white eggshell was slightly blackened by the flames, but it was brand new after being wiped with sand.

Pour cold water on it to cool it down a little, and Bifang used a stone to pry open the eggshell, pinching his fingers to peel the eggshell open bit by bit.

"Unlike the short breeding period of birds and mammals, their egg-laying period extends almost from spring to autumn. During this period, it is not strange to eat any eggs."

"Like poultry raised by humans, they can lay eggs almost all year round."

[Will ostrich eggs explode if they are directly roasted in the fire? ]

[Why would they explode?]

[Anyway, you can't put eggs in the microwave. I was fried once, and the whole microwave was full of broken eggs. Then my mother scolded me, and I remember it vividly.]

"Don't worry, it's unlikely."

Bifang picked up the sand with his fingers, and was obviously burned.

"The microwave oven cannot heat eggs directly because it converts electricity into microwaves, which heat the food from the inside out."

"The heat generated by the egg itself hits the sealed eggshell, and as the heat increases, it cannot be released, resulting in an explosion."

"On the contrary, fire roasting heats food through heat conduction, heating from the outside to the inside, and the possibility of explosion is much smaller. Even if it explodes, it usually cracks, not explodes, so many people use the oven to make eggs, such as salt-baked eggs."

"Of course, I personally just want to be convenient and throw the eggs directly into the fire pit, like roasting sweet potatoes. For safety reasons, don't follow my example."

After pouring some cold water, the temperature of the eggshell finally dropped a little. Along the hole knocked open by the stone, hot air gurgled out, showing the amazing heat contained in it.

The ostrich shell is very thick and hot, so it is very difficult for Bifang to peel it.

Harley next to him even stood up and paced constantly, licking his lips with his tongue, eager to try.

When the eggshell was completely peeled, the delicate milky white egg white was revealed in front of everyone, and it was slightly steaming in the air.

"This is yours."

Bifang cut off two-thirds of it with a knife, then cut it into small pieces to quickly cool it down, put it in a large egg shell, and handed it to Harley.

Harley, who had been hungry for almost two days, lowered his head and smelled it. After confirming that there was no peculiar smell, he licked it happily.

Bifang picked up a trembling egg white with a knife and put it into his mouth, and tasted it briefly.

[How is it, is it delicious? ]

[What does it taste like?]

[I heard it's not delicious? It seems that the bigger the egg, the worse it tastes? ]

[Nonsense, I feel that the bigger the egg, the better it tastes. Goose eggs are much more delicious than chicken eggs. ]

[Ah, I feel that goose eggs taste very fishy and the taste is still very rough.]

[Why do I feel that goose eggs have a very delicate taste. . . The yolk is not choking, and it tastes delicious with some soy sauce]

[Let's have a fight]

"It tastes good." Bifang saw the barrage and expressed his feelings.

"I think it tastes much more delicate than eggs, and the yolk is not so dry, it's delicious, but this kind of thing is like what the barrage said, some people think goose eggs are not delicious, and some think they are delicious. I have a good impression of goose eggs. I don't know why it is like this, maybe it depends on the person?"

"From a scientific point of view, ostrich eggs are the best eggs and are called the 'king of eggs'. On the one hand, it is the largest egg, and on the other hand, the protein, calcium, and iron content of ostrich eggs are higher than other eggs. Nutritionists call ostrich eggs 'soft gold' and the first choice for 'food supplements' to enhance physical fitness and improve immunity."

After a few simple words, Bifang and Harley immersed themselves in dry rice.

The food quickly entered the stomach and reacted violently with the stomach acid that had been waiting for a long time.

The strong feeling of hunger quickly subsided from the mind, making the whole person's spirit refreshed, as if a lot of relaxation.

An ostrich egg weighs three pounds. Although the eggshell is thick, it is not very good compared to its own quality. One egg is enough for Bifang and Harley to have a meal.

[It's a pity that they didn't eat meat]

[Such a big ostrich, can you eat for a long time? ]

[To be honest, rolling on the ground at the beginning was a bit stupid (eating melon)]

[Why is the cheetah faster, but still can't catch up]

"In fact, the speed of the cheetah is not as fast as imagined. Many materials say that the speed of the cheetah is 110 kilometers per hour, or even 120 kilometers per hour, but this is not accurate."

Bifang bit the egg yolk, swallowed it and continued.

"This data didn't appear until 1957."

"At that time, the cheetah was already known as the 'king of speed', which can be said to be a world consensus, but no one has ever specifically measured the speed of the cheetah."

"Later in 1957, a photographer named Kurt Severin designed an experiment to test the speed of the cheetah."

"He turned a modified bicycle upside down on the ground, and a very strong and long fishing line was connected to the wheel of the bicycle, and a bag of meat was tightly tied to the end of the fishing line."

"People turn the wheel, the wheel drives the meat bag to move, and the cheetah will rush forward with the meat bag."

[Oh my god, why do I have the vision of a donkey and a carrot (dog head)]

[This is too crude]

[Can the measurement be accurate? ]

[I feel that these things are not very accurate. After all, if the animal is hungry, its state is definitely not online. If it is not hungry, why should it chase the meat bag with all its strength?]

[Fuck, it makes sense, then there is no way to measure it? ]

"Then the experiment began. As soon as the starting gun sounded, people started to turn the wheel with all their strength. At that time, the speed of turning the wheel almost reached the limit. Then the cheetah chased the meat bag, and the stopwatch started at the same time."

"After the intense experiment, people calculated that the average speed of the cheetah reached 71 miles per hour, which is about 110 kilometers per hour."

"The test results were later published in newspapers, so people all over the world knew that the cheetah's speed reached 110 kilometers per hour."

"Even in the process of spreading, some people said that the cheetah's maximum speed was 120 kilometers per hour. This is the truth of the rumored 120 kilometers per hour now."

Bifang did not finish his ostrich egg. Although he was a little reluctant, he still kept some and slowly fed it to Jerry in his hand.

Jerry took the egg white with both hands, stuffed his mouth full, and kept chewing.

Harley next to him pushed two intact bird eggs over and tried to push them into the fire pit with his claws, but was stopped by an outstretched foot.

Eating without restraint is essentially a waste of food.

Bifang would not do that. He put the two eggs back into his backpack and continued to explain to the audience.

"With the development of science and technology and the in-depth study of cheetahs, some scientists began to doubt whether the cheetah's speed was as high as the legend said."

"In addition, the test tools in 1957 were relatively simple, such as wheels, stopwatches, starting guns, etc., and the error might be large, so scientists planned to use a more scientific and accurate method to measure the speed of cheetahs."

"After entering the 21st century, researchers from China installed the most advanced GPS positioning system on 367 cheetahs."

"After hundreds of tests on cheetah hunting actions, people found that the cheetah's maximum speed was only 93 kilometers per hour - this is far lower than the 110 kilometers or 120 kilometers that people originally said."

"Note that this is the highest value, which is the conclusion drawn after nearly 400 cheetahs ran thousands of times, not the average value or median. . "

"And the speed of the ostrich is also over 70, so the difference between the two is not that big. In addition to the difference in endurance, as long as the ostrich makes a few sharp turns, the cheetah will not be able to keep up. "

"That's why I always emphasize the necessity of ambush. The cheetah is fast and is the top master in nature, but other animals are not bad either. They are all first-class masters. If you are not careful, you may miss. "

"After all, the entire natural world is co-evolving. The speed of both sides is basically growing synchronously, just like an arms race. "

"Co-evolution: refers to two or more species in a natural habitat. Due to their close ecological connection, their evolutionary processes are interdependent. When a species evolves, the selection pressure between species changes, and other species will undergo evolutionary events that adapt to it, resulting in a phenomenon of high adaptation between species. 】

"That's what this netizen said. This is co-evolution. There is a famous Red Queen hypothesis about this. It was proposed by Van Valen, an evolutionary biologist at the University of Chicago in the United States in 1973."

"It is believed that there is co-evolution between different species."

"For example, if a cheetah has a genetic mutation, causing the cheetah to run faster. Then the antelope preyed by the cheetah will also run faster."

"Because, due to genetic reasons, the slow-running antelope will be eaten by the cheetah, and the genes of these antelopes cannot be passed on to their offspring. In other words, the slow-running genes will be eliminated by natural selection, which will cause the antelope to run faster and faster."

"Similarly, after the antelope runs faster, the slow-running cheetah will be more difficult to prey on and will have a greater chance of starving to death. Therefore, the evolution of the antelope will also select the cheetah's genes, making the cheetah run faster and faster."

[Damn, that's what it is]

[I always thought that the cheetah's speed was more than 100]

[Not necessarily, after all, there are also Bolts among humans? 】

"That's right." Bifang smiled, "Just like what the netizens said just now, if you are hungry, you can't run, and if you are not hungry, you don't want to run. The average speed can be known, but the maximum speed of animals is difficult to measure. They don't have sports competitions like us humans."

"So, there may be cheetahs that can run at a speed of 100 kilometers per hour."

"However, despite this, cheetahs are still the fastest cats and the fastest animals on land."

"The reason why cheetahs can run so fast is related to their streamlined bodies, long tails, strong hearts and lungs, and light bones."

"Listen to Halley's heartbeat."

Bifang called the drone, and the drone immediately flew to his side and approached Halley at the same time.

Harley was very curious about the black bird-like thing, stretched out his hand, and tried to take a picture of it, but unfortunately he was held down by Bifang. When he couldn't move, the audience heard its strong heartbeat.

"Pay attention to the cheetah's exhalation and inhalation, and then pay attention to its heartbeat."

[emmm, what's wrong? 】

【How come I didn't hear anything】

【Tell me something】

【If you say so, I can't be low-key anymore. It's actually very simple. You can find out if you listen carefully. Do you understand? 】

【What are you talking about? 】

【Drag him out and kill him! 】

"Hahaha, I've made it quite obvious. Listen, when a cheetah inhales, its heartbeat speeds up, but when it exhales, its heartbeat slows down."

"In humans, this would be respiratory sinus arrhythmia, an irregular heartbeat, but it's normal in cheetahs."

"This is because the cheetah's body needs a lot of acceleration to adapt to high-speed running. When inhaling, the heartbeat speeds up to promote the supply of oxygen to give high energy to the muscles. When exhaling, the heartbeat slows down to allow carbon dioxide to be excreted at a normal speed."

【Awesome】

[It’s over, why do I feel like I have the same problem?]

[Looking at the live broadcast, I can see something is wrong (distraught)]

[What happens if you have an irregular heartbeat? 】

"Don't worry, it won't be bad. Sinus arrhythmia itself will not have an impact on the body. It is just a clinical manifestation. Normal people will also have it, especially when they are tired, drink alcohol, drink coffee, or have insomnia. Get more rest. It’ll be fine.”

[Thank you Dr. Fang]

[After listening to Dr. Fang’s words, my legs are no longer sore, my waist is no longer painful, and I can go up to the eighth floor in one breath]

[You know how to rhyme]

【skrskr】

After a brief lunch, Bifang replenished his water supply and continued on the road with Harley.

As the geographical location moves further and further north, the vegetation on the surface gradually becomes sparser, and many places even change from the original hard soil to sandy land.

"I don't know how many more days the wet season will arrive. It should be these days."

Looking at the dry land around him, Bifang felt as if all the moisture in his body was being lost, as if it was being sucked away by the earth beneath his feet.

The temperature is obviously not high, but there is such an illusion.

At the same time, a small plant on the ground also attracted his attention.

"Yesterday I showed how to track animals to find water sources. In fact, normally, the roots of many plants can also meet our needs. Look at this."

Bi Fang knelt down and lifted up the plant that looked like tree roots.

It was something that looked like roots, and it didn't have many branches. There was a question mark as to whether it was even ten centimeters tall.

It really uses inconspicuousness to its mechanism, and normal people won't even take a second look.

But Bi Fang recognized it at a glance.

Harley behind him took this opportunity to lie down on the ground and rest.

【What is this】

[Can replenish water, cactus (confirmed)]

"Hey, you guessed it right, this is a cactus."

Bi Fang took out his dagger, inserted it directly into the soil, dug up the hard soil pit, and then dug up the soil.

"This is a cactus plant called Odia. It is not a cactus in the traditional sense, but its roots are very large. When they are hungry and thirsty, many African natives will look for this plant to quench their thirst."

"But it's harder to find. You can tell by its appearance how inconspicuous it is. It's no different from a normal tree root."