Analyze the Spring Festival from a biological point of view, and analyze why you don t like to eat i

Spring Festival is the beginning of the Chinese New Year, around the beginning of the Spring Festival. "Year after year, Vientiane is renewed".

China's solar terms and lunar calendar are produced in the Yellow River Valley in the north, and there are obvious four seasons. Around the Spring Festival, the cold and harsh winter has passed, and the weather begins to warm, representing the arrival of spring.

In the spring, the earth comes back to life, and creatures that have been dormant for the winter begin to revive. Plants begin to spit out green shoots, and animals begin to wake up from hibernation and reappear on the ground. The world seems to start anew with the arrival of the spring breeze.

The Spring Festival is the beginning of the recovery of all things.

The range of Chinese is too large, China is vast, people in the northeast and northwest (especially ethnic minorities), due to the cold weather, plus the ancestors are nomalist, eating habits are mainly meat, similar to the current Westerners, so eating more meat has little impact on the body, generally will not appear hyperlipidemia, high blood pressure and other diseases, but for most Han people, the ancestors are farming with plants as the main food, meat as a supplement, eat more meat has little impact on the body, prone to disease, Therefore, it is still mainly based on grains and vegetables, and eat less meat, especially greasy. Why is that? I read a book, the place where the Chinese live relative to the current Europe, in fact, the living conditions are not good, if it is nomadic, intelligent feeding few people, the human body itself consumes less energy, belongs to the saving type of physique, unlike nomads, so if you eat too much greasy or meat will accumulate excess energy in the body, become fat, obesity.

2. Because we are relatively poor in the past, we have worked hard for a year, and we are usually more frugal, and we generally eat some big fish and meat during the Spring Festival, but now people's lives are rich, and we usually eat very well, and we do not rely on the Spring Festival to eat well, but the traditional habits are still difficult to change, if others go to your house, you will give a home-cooked meal, and you feel that you can't get by, so you still have to prepare a lot of big fish and meat during the Spring Festival.

3. To sum up the Spring Festival, generally eat more, some are also overeating, more meat, greasy food composition of the diet must be unfavorable and healthy, and the Spring Festival people's various welcome to send more activities, irregular work and rest, but also prone to disease, not conducive to the body.

If the temperature is too high, the activity of digestive enzymes in the human body is low, and digestion slows down, so I don't like to eat.

Human beings are homeothermic animals, and the temperature is high in summer and the heat dissipation is less, so the body's body temperature balance regulation requires reduced heat production and weakened metabolism.

It should be related to the secretion of salivary amylase, with more secretion and better appetite and less poor appetite.

Caused by stuffiness, metabolism reacts.

Bacteria and fungi decompose the remains of animals and plants into carbon dioxide, water and inorganic salts, and these substances can be reabsorbed and utilized by plants, and then produce organic matter Decomposer because it can decompose the organic matter in the producer's residual branches and leaves, consumers' corpses and feces into inorganic matter, and return them to the inorganic environment, ensuring the smooth circulation of materials Therefore, the reason why fallen leaves can be turned into spring mud to protect flowers is because of the decomposition of decomposers

Therefore, c

Manjianghong, fern.

Lotus, angiosperms.

Willow, angiosperms, aspen, gymnosperms.

Manjianghong, fern.

Lotus, angiosperms.

Willow, gymnosperms, aspen, gymnosperms.

They are ferns, quilts, gymnosperms, and gymnosperms.

1. Genetic perspective: Because genes determine traits, of course, including the average lifespan of this creature, the life of a century-old pine is in danger.

2 Food Chain Angle: After a hundred years of erosion by countless insects, the roots and trunks (the parts that transport water) of old trees have been severely damaged. (Insects eat tree roots and xylem).

3 Darwin's view: survival of the fittest, the physiological activities of old trees are significantly lower than those of the same new saplings and other trees, so they are likely to die due to intraspecific competition or extraspecific competition.

From a biological point of view, these unrelated substances must first be converted (deoxyribose, nitrogenous bases, phosphoric acid) before they can be synthesized into nucleotides and then nucleic acids.

Xueba hates that he can't do a question.

Can you write the topic completely?

You just say that what weasels, foxes, and birds are talking about, mainly in terms of today's environmental problems, and in the tone of small animals, "human beings destroy the environment and destroy our living home......"What the hell.

The speed of the heartbeat is simply related to two factors. The first factor is your heart's ability to pump blood, which is how much blood it can pump at one time. The second factor is your level of excitement, the more excited you are, the more energy you expend, the faster your blood flows, and the more your heart pumps.

So if at the same level of excitement, the heart of a person who exercises regularly beats slower because his heart pumps more blood. When the heart level is the same, the heart of a person who is exercised, excited, or nervous beats faster because his blood flow is faster, and the number of beats he needs to beat increases.

Adrenaline, which excites the nerves.