Snails and Slugs are very smart and active in some ways

 Snails and Slugs  are very distinctive, slow and thin. Many people may think of him as a calm animal and a very simple animal, but now they are not as simple as they look. Because they can crawl on knives and razor blades completely without any damage! And how many animals can do that?

Thanks to their muddy bile bodies, which reduce friction between their bodies and the blades, and the low pressure created by their slender feet, snails and slugs, they can easily slip off sharp surfaces that Can tear another animal to pieces. This feature is also due to the fact that the part of their body that can move is without any hard bone-like object, which minimizes the chance of friction. And when the friction is reduced, the process of breaking or cutting the body is also reduced or eliminated.

A mucous mucus that comes out of their body like mucus-like moisture which is one of nature's best lubricants and it helps the mucus to move on sharp objects without any harm.

This is further explained in this YouTube video

Back pain or Backbone is a common disease in humans nowadays ?

Is it true that this disease in humans is the result of evolution?

In a way we are paying the price of evolution ??

A: Yes, back and knee pain is found in most people in middle age due to evolution. Back and knee structures evolved millions of years ago when all vertebrates were cattle. The bone is a horizontal unit, so it does not weigh down on the joints of the seals. In addition, the body weight is divided into four legs, so there is not much stress on the joints of the front or back legs. 

When walking on two feet, the lumbar vertebrae became vertical instead of horizontal, so that all the weight of the body above the hips falls on the joints of the spinal cord seals - similarly, more or less all the body weight falls on the knee joints. 

The direction of this stress on the joints changes as you walk or run - the spine and knee joints not only have to carry the weight of the body but also the body has to maintain balance - our brain balances the body. The angle of weight on the spine is constantly changing to maintain it, which we don't realize, but it keeps the spine stressed all the time. 

When we do not consciously try to keep the spine straight while standing and sitting, our poor posture usually puts extra stress on the spine - this spine has been in place for decades. The distance between them decreases or the cushion between them disappears and the seal bones start to collide directly with each other - all these factors lead to chronic back pain.

Why do we suddenly get so much sleep when we are reading for the preparation of the paper ?

At the same time, when you leave the study and engage in some other work, you feel more energetic. Does it just include the element of lack of interest? Or there are other reasons.

the answer. 

There are two major factors: apathy and fatigue. When we are tired or our sleep is not complete and we are walking, our brain has to be alert from time to time to protect us from dangers, so we do not sleep. Similarly, even if we are tired but doing very interesting work, our attention is focused on this work, so we do not get sleep - but in this case, if we sit in one place and start doing something in which there is no We are not interested in it and it does not require any physical exertion (especially when we are in our room where we usually rest, sitting on our bed or lying down to read) then our brain considers it a time of rest. 

Therefore, the hormones that cause sleep begin to be released from the brain. For the study, it is necessary that you first take a nap, that is, sleep for a while so that the sleep is complete and the brain does not feel the need for sleep during the study. Keep the study space separate from your bed, sit down and read, and after a while get up and take a few walks so that the body is not accustomed to rest and blood circulation is maintained. 

Taking a short walk is good for your health - invent ways to keep your interest in the study - search the net for the topic you are studying and gather material and study it too. When studying, focus more on writing than just reading - the writing process activates more parts of the brain, which in turn makes the mind more alert, and also makes your muscles more active and less likely to fall asleep. happens'

Misunderstanding.. "Scientific theory becomes law when it is proven"

Not really. Theory is always an indisputable fact in science. People who read and understand science seriously know that scientific theory actually has a different meaning than the theory used in English. Any theory needs three things to become a scientific theory.

1. That theory describes a phenomenon of how it appears. For this, a complete mathematical framework is developed which describes the phenomenon in detail.

2. Make predictions for the theory to be proven, which can be proved by experiments and observations.

3. That theory should be proved by these experiments and observations.

Now let's move on. Many people think that scientific law is actually a proven and solid law that has been proven, and that when the theory is proven, it becomes law.

In science, however, this does not happen. A scientific law is derived from a scientific theory. That is, it is a finite form or part of that theory.

Thermodynamic theory, for example, describes how heat is transferred or released from a system. Parts of this theory are called the Law of Thermodynamics.

Similarly, Newton's theory of gravity, that there is an unseen force called "gravity" that holds mass objects together. Create a law of gravitation based on this theory, which explains how and with what force two masses pull each other.

Similarly, information theory that explains how information can be stored and transmitted. Under this theory, "Shannon" states the rate at which information can be transmitted to a channel.

Similarly, the theory of evolution, which states that any living thing on earth undergoes a process of evolution and evolves into different species. Part of this theory is the Law of Natural Selection, which states that nature allows organisms to make changes that are compatible with the environment and that benefit the organism's survival.

So the next time someone tells you that any scientific theory is just a theory, you will have to give it a scientific explanation.

The Science World Group Forum

The Science World Group Forum has been providing you with authoritative scientific information on the theory of evolution for a long time and has been trying to dispel misconceptions about this theory and explain the correct concepts. How successful have we been in this endeavor? Yes, after a year of study, now is the time for the annual exam!

Answer yes or no to the questions below. Write the question number and then say yes or no and see how much you score.

۔1۔ According to the theory of evolution, humans have evolved from the present-day apes.

۔2۔ The goal of evolution was to create a human-like species, and it has now come to rest on humans.

۔3۔ In appearance, similar animals such as horses, donkeys, zebras, dogs, wolves, wolves, and humans are closely related ancestors of chimpanzee guerrillas.

۔4۔ The strongest evidence for the theory of evolution comes from fossils.

۔5۔ The theory of evolution is the name given to the explanation of the history of life on Earth.

۔6۔ Random mutations and natural selection are the basic mechanisms of biological evolution.

۔7۔ It is not possible to find an old fossil of a mammal (for example, a whale) dating back to the time of the reptiles (such as dinosaurs). If this were to happen, it would falsify the theory of evolution.

۔8۔ The theory of evolution cannot be validated until the mystery of the first cell's existence has been solved.

۔9۔ According to the theory of evolution, all existing birds are an evolved form of a species of dinosaur.

۔10۔ All the living insects found in the world, fish, reptiles, birds, mammals, primates, animals all came together at the same time.

Theory of Evolution Darwinism or neo-Darwinism

 Calling the theory of evolution Darwinism or neo-Darwinism on Urdu social media is a kind of "deliberate ignorance" which is a failed attempt to limit this theory to Darwin's ideas.

All members are requested to read Zafar Khan's comment carefully and especially to consider the sentence that I have chosen from his comment - we have unfortunately linked the scientific theory of evolution with atheism and social Many people in the media distort this scientific theory in order to disprove evolution and label it Darwinism - since we generally think of the theory of evolution as meaning "man made of apes". And Darwin's name has been linked to evolution, so it is very easy to call evolution Downism and then call it a conspiracy of atheism.

Whatever the field of science, it takes years of study to understand it - science is not compatible with human instinctual thinking so scientific and logical thinking has to be learned - as much scientific honesty is required to examine the facts. It is also found in very few people - the natural tendency of man is to correctly accept what is learned in childhood - what we commonly call common sense, it grows from our childhood training - this is common sense. (Although it is not very common) It is not enough to understand the facts - man has learned from centuries of experience how to study the facts by separating his prejudices (because this is the requirement of scientific honesty). 

We call this process, this method, the scientific method - adopting a scientific method is tantamount to changing our natural thinking, so we have to learn it - we don't pay any attention to science education first, It is taught like any other subject in which there is no need to understand or explain only the emphasis on 'remembering' scientific facts. No effort is made to explain the scientific method and to create scientific thinking, nor are students with scientific thinking encouraged - so it is not surprising that people Why is it so easy to provoke the allies of the theory of evolution? However, it is a pity that our nation has failed miserably in producing scientific thinking in seventy years, which inevitably has left us behind in the world. Are

I urge all the members that although this forum is a social media forum and we offer only authentic science related information with utmost honesty, but in general it is not right to learn science only from social media - to learn science It is important to read and understand the books written by scientists - any claim related to science whether I make it, Zafar Sahib, someone else is the administrator of this forum, or someone else, it is the individual responsibility of all of us that we Don't accept it without research - study science yourself and try to understand science.

Why is the rate of heart attack in women lower than in men ?

We first look at what is a heart attack? In fact, every living cell, including our heart, needs oxygen and nutrients, and blood is given to parts of the body to supply these things. Heart tissues and cells also need a blood supply, and there are coronary arteries to supply blood to the heart. When these coronary arteries become obstructed, the blood supply to the heart tissues is reduced, which does not meet their need for oxygen and nutrients, and the heart tissues begin to weaken, resulting in heart failure. Decreases and a heart attack (myocardial infarction) occurs.

The question is, why are the coronary arteries blocked? There are various reasons for this, but there are basically two reasons. One reason may be that something gets stuck in the coronary artery, such as cholesterol. The second reason may be that nothing is stuck, but the coronary artery has shrunk (shrunk) by itself. Unnecessary vasoconstriction occurs due to which the veins constrict, these chemicals contain chemicals that come into the body from smoking and excessive consumption of alcohol. So far we've seen why heart attacks happen.

Now let's talk about why women have a lower chance of having a heart attack.

In fact, the female sex hormone estrogen plays a role in this. Estrogen is formed in a woman's ovaries, when a woman's menstrual cycle begins (called menarche, which begins between the ages of 12 and 15). The question is how does estrogen reduce heart attack? Above we talked about how high cholesterol causes blockage in the coronary arteries. Cholesterol is a form of lipid (fat), our liver makes cholesterol from other parts of our diet such as carbohydrates, fats, proteins and the rest of the cholesterol we get directly from our diet. Cholesterol is essential for the body, but too much of it is harmful. Cholesterol is fat and fat cannot travel in the blood alone, it has to bind to proteins in the blood to travel in the blood, and proteins and lipids combine to make lipoprotein.

There are two types of cholesterol

One is Low Density Lipoprotein Cholesterol (LDL) and the other is High Density Lipoprotein Cholesterol (HDL).

LDL cholesterol is absorbed directly from the blood into the blood vessels and other tissues of the body, and this cholesterol blocks the coronary arteries of the heart.

The second type of cholesterol, HDL, first enters the liver, where an excess of it is separated from the blood and expelled from the body or converted into something else.

So we can call HDL good cholesterol because its amount is under control while LDL is called bad cholesterol because its amount is out of control and causes blockage of veins.

The estrogen hormone produced in women plays a role in increasing good cholesterol and lowering bad cholesterol. In addition, estrogen opens and relaxes the blood vessels. In addition, this hormone increases the free radicals in the blood. It also eliminates free radicals that cause damage to blood vessels.

This estrogen hormone is not always produced in women, after menopause, that is, at the age at which menstruation stops, the production of estrogen also stops and at this stage women and men are equal for heart disease.

In addition, men generally smoke and drink more than women and do more strenuous work.

It should be noted that in all this we have assumed that the woman is healthy, it is possible that another disease may affect the heart.