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8 curiosities about chameleons

Known primarily for their ability to change color, chameleons are among the most fascinating species among reptiles. They are very different types of lizards due to their large eyes and curled tails, and are found in both the jungle and the desert. These animals may inhabit Asia and parts of Europe and North America, but it is on the African continent, more precisely on the island of Madagascar, where most species of chameleons are found.
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The muscular system

The muscular system is formed by the set of muscles of our body. There are about 600 muscles in the human body; together they represent 40 to 50% of a person's total weight. Muscles are able to contract and relax, generating movements that allow us to walk, run, jump, swim, write, propel food along the digestive tract, promote blood circulation in the body, urinate, defecate, blink. eyes, laughter, breathing… Our ability to move depends on the joint action of bones, joints and muscle under the regulation of the nervous system.
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Ten giant animals that are rarely seen

Being giant doesn't necessarily mean being easy to see. Some of nature's largest animals behave shyly or know how to camouflage very well, remaining mysterious to scientists. Check out ten of them that are rarely seen: Armadillo (Priodontes maximus) In theory, it seems easy to spot something the size of a pig, covered with scales and with claws up to 20 centimeters similar to a small sword.
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The whys of animals

Do centipedes really have a hundred paws? Why should we drive away the flies? Why does the cock sing so early? In this section, we present various curiosities about animals. Why do cats purr? Cats purr when they feel good and when we pet them. It is a sign of pleasure. They are two vocal cords at the back of the throat that vibrate, making this characteristic sound.
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60 curiosities about cats

I know it may sound biased, but I must say that we cats are intelligent, very loving animals; in one word: unique. I leave here some curiosities unraveled, so that they know us even better. On average a cat spends 2/3 of the day sleeping. This means that in 9 years of life, only 3 years is awake.
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10 weird and wonderful creatures from Madagascar

Madagascar, a country on the east coast of Africa, is home to an incredible array of wildlife: a whopping 250,000 species of animals reside there, 70% of which are endemic (and many more endangered). While some Malagasy creatures may have been immortalized by the Disney movie, the true range of animals in Madagascar is far more wonderful than any computer animation can produce.
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Fat daddy sperm can make fatter son

Surprising research indicates that the father's influence on the child can go far beyond genetics. According to research from the University of Copenhagen, the sperm of obese men are different from those of thin people. And the odd thing is, when an obese person goes through bariatric surgery, losing his belly and appetite, his sperm also changes.
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How to store the toothbrush?

People often store their toothbrush in various places, such as inside the bathroom cabinet, in a drawer, in a toothbrush holder or even leaving it over the sink, sometimes using a plastic cover to protect the bristles. But what is the ideal way to keep it so that it is always clean?
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The History of Dog Breeds

The Beagle emerged in England as a hunter's companion, and in the 14th century it was used for hunting hares. World champion in smell, often drive the owners crazy on the sidewalks, because it has an uncontrollable desire to discover the origin of the odor. At home, he is always full of energy, which has earned him fame as a watchdog.
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Why do you get mad when you're hungry?

Have you ever had a piti with someone when you were hungry? Or was very, very, very angry, wanting to cry, beat and all that? If you are like this, or if you know someone who is like this, take a deep breath and try to understand - there is a good explanation behind it. The phenomenon by which some people get grumpy when they are late eating happens because of a process triggered by the body when it needs food.
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10 Scientific Myths Many People Believe

I bet you believe one of these things (but you shouldn't). There are a number of scientific myths scattered about some basic principles. While most of them have been refuted years ago, these rumors simply won't go away. See 10: It is true that there is much we do not know about the brain, but we certainly know that we use all of its capacity.
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5 Brain Myths That Must Be Forgotten

Spoiler: We use our brains all the way and we have not become superhuman. You have probably heard these five myths over and over in your life and believed in them all. Discover: 1 - We Only Use 10% of Our Brain Although many movies take advantage of this excuse to turn their characters into superhuman species, it is, in fact, a lie.
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Animal Sense: 20 Things You Don't Know

The Animal Kingdom is a field full of mysteries. Studies of various species still seek answers that in the near future promise to surprise us - and a lot. For now, we may have our jaw dropped at what scientists already know, for example… These 20 things about the meaning of animals: 1.
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Terms used in ecology

Habitat Habitat is the place in nature where a species lives. For example, the habitat of the royal victory plant is the lakes and wetlands of the Amazon, while the panda's habitat is the bamboo forests of the mountainous regions of China and Vietnam. Ecological niche The niche is a set of conditions under which the individual (or a population) lives and reproduces.
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Ecosystem

Is The set of relationships that fauna, flora, microorganisms (biotic factors) and the environment, composed of the elements soil, water and atmosphere (abiotic factors) maintain with each other. All the elements that make up the ecosystem relate to balance and harmony and are linked together. Changing a single element causes system-wide modifications that may result in the loss of existing balance.
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Terms used in ecology (continued)

Community In the figure below, we can see that at sea there are various animals and various types of plants. And there are also very small beings - so small that they can only be seen with special devices like microscopes, which have special lenses that enlarge the image of the observed beings. If we put a drop of seawater under the microscope, we will see a huge number of these little living things.
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Eggs

Animal eggs are usually large, immobile cells that contain nutrient reserves within them for embryo development. These nutrients make up the calf. The quantity and location of the calf varies in different eggs. These two characteristics allow us to classify them into several types: oligolithite (oligo = little; lecith = calf), homolithite or isolecite (homo or iso = equal) - has little evenly distributed calf and its segmentation is total or holoblastic (holo = whole; blasto = germ) is equal, since it gives a morula with blastomers of approximately equal size; It is the egg of the protocordates (amphoxus and ascidian) and many marine invertebrates such as sponges, corals and starfish.
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Fertilization

Of the approximately 300 million sperm eliminated in ejaculation, only about 200 reach the fallopian tube, and only one fertilizes oocyte II. When released from the ovary, the oocyte is encased in the zona pellucida, formed by a network of glycoprotein filaments. Externally the zona pellucida there is the corona radiata, formed by follicular cells (cells derived from the ovary).
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Embryonic Development

The zygote carries the genetic material provided by the sperm and the egg. Once formed the zygote will divide many times by mitosis until it gives rise to a new individual. Thus, all cells that form an individual's body have the same genetic heritage as existed in the zygote. Nevertheless, throughout embryonic development cells undergo a process of cell differentiation in which some genes are "activated" and others are "deactivated", with only the "activated" coordinating cell functions.
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Evolution

How did life in the terrestrial environment come about? And how did it evolve? To answer these two questions, one can resort to scientific arguments or not. It is still a common belief that life originated and evolved from the action of a Creator. On the other hand, there is much scientific evidence, much of it supported by experimental procedures, that life emerged and evolved slowly and progressively, with the active participation of numerous chemical substances and reactions, bioenergetic processes and of course the participation constant environment.
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