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How does Messi keep the ball close to himself

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The science of how Messi keeps the ball close to himself photo credit: ZaleDesigns Messi is a magician with the ball at his feet. He's in my opinion the best player in the sense that he can control the ball so well, runs so fast with the ball & changes the direction at full speed like it's a walk in the park. For starters he started playing very early (at 3) which is crucial if you want to be a good player. In that aspect, he's God gifted as he had dribble skills which is genetic in my opinion. Height He is short which means a low center of gravity so it's difficult to push him off the ball. That's why we see that anyone rarely can topple him down, instead players much larger than him lose possession to him. So his short height suits his style of play & is a blessing in disguise. Change of pace Messi changes his pace really well. He starts slow and runs directly at the defender which means the defender has to stop & focus on him. When he reac...
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what are natural resources?

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Natural Resources

Introduction

  • The resources, available on the Earth and the energy being received from the Sun, are essential to meet the basic necessities of all life-forms on the Earth.

  • The biotic component incorporates all living of the biosphere.

human sperm cells


  • The abiotic component incorporates the air, the water, and the soil of the biosphere.

Biogeochemical Cycles

  • Biogeochemical cycles explain a constant interaction between the biotic and abiotic components of the biosphere.

  • Biogeochemical cycles are a dynamic phenomenon that helps to maintain the stability in the ecosystem.

  • The significant biogeochemical cycles are −

    • Water Cycle

    • Carbon Cycle

    • Nitrogen Cycle

    • Oxygen Cycle

  • Let’s discuss each of them in brief −

Water Cycle

  • The whole process, starting from the water evaporation, rainfall to flowing back into the sea via rivers, is known as the water-cycle.

water circle
water forming a circle


  • As shown in the image given above, water cycle is a complex phenomenon. During the process of water cycle, it helps ecosystem by maintaining its balance.

  • Water cycle helps in making new fertile soil, increasing the fertility of soil, providing nutrition to the biotic components in different ecological regions, etc.

Carbon Cycle

  • Carbon is found on the Earth in various forms, such as diamond and graphite (in solid form) and in combined state i.e. carbon and dioxide (as a gas).



  • Carbon is one of the essential elements for the photosynthesis.

carbon monoxide released into the atmosphere


  • The process of photosynthesis converts carbon dioxide, which is present in the atmosphere or dissolved in water into glucose molecules.

  • The glucose provides energy to living things that involves the process of respiration.

  • In the process of respiration, oxygen may or may not be used to convert glucose back into carbon dioxide.

  • Lastly, the carbon dioxide goes back into the atmosphere.

Nitrogen Cycle

  • About 78 percent part of our atmosphere is shared by nitrogen alone.

  • Nitrogen is a part of many molecules, which are essential for the life.

  • There are a few varieties of bacteria that help in nitrogen-fixing.

  • These special bacteria convert the comparatively inert nitrogen molecules into nitrates and nitrites essential for the life in direct or indirect way.

Nitrogencycle

  • The nitrogen-fixing bacteria are largely found in the roots of legumes.

Oxygen Cycle

  • In the total constituents of our atmosphere, about 21 percent is shared by oxygen.

  • Oxygen is also found in the Earth’s crust.

  • Oxygen is an essential component of most of the biological molecules, including carbohydrates, nucleic acids, proteins, and fats (or lipids).

  • Oxygen, present in the atmosphere, is used especially up in the three following processes −

    • Combustion

    • Respiration

    • Formation of oxides of nitrogen

Oxygen Cycle

  • Oxygen is returned back to the atmosphere by the process of photosynthesis.

  • Oxygen is lifeline of most of the organisms found on the earth, but for some bacteria, it is poisonous.

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Chemical reactions and equations

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Chemistry - Chemical Reactions & Equations Introduction A process in which one or more chemical substances react with other chemical substance and converted to one or more different substances is known as chemical reaction. Chemical Equation A chemical equation is the symbolic demonstration of a chemical reaction; it is represented through symbols and formulae. E.g. Magnesium + Oxygen = Magnesium Oxide Mg   +   O 2   =   MgO The substances magnesium and oxygen are known as reactants and the result of reaction, i.e., magnesium oxide is known as product. Remember,  the total mass of the elements present in the products of a chemical reaction has to be equal to the total mass of the elements present in the reactants. The number of atoms of each element always remains same, before and after the chemical reaction. Types of Chemical Reaction Following are the major types of chemical reaction − Combination Reaction Decomposition Reaction Displacement Re...
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The Fundamental Units Of. Life

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Biology - The Fundamental Unit of Life Introduction The fundamental unit of life is cell. Cell was first discovered by Robert Hooke in 1665 in a simple microscope. In 1674, Leeuwenhoek, with the help of developed microscope, discovered the free living cells in pond water. In 1831, Robert Brown had discovered the  nucleus  in the cell. In 1839, Purkinje used the term ‘protoplasm’ for the fluid substance found in the cell. The cell theory was proposed by Schleiden (1838) and Schwann (1839). According to the cell theory, all the plants and animals are composed of cells and that the cell is the basic unit of life. In 1855, Virchow further expanded the cell theory and suggested that all cells arise from pre-existing cells. In 1940, the discovery of electron microscope made possible to observe and understand the complex structure of the cell. Unicellular Organisms The single cellular organisms, such as  Amoeba, Chlamydomonas, Paramoecium , and bacteria, ...
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carbon and it's compound

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Chemistry - Carbon and its Compounds Introduction Carbon plays very important roles for all living beings. The amount of carbon in the earth’s crust is merely 0.02%, which is available in the form of minerals such as carbonates, hydrogen-carbonates, coal, and petroleum. The presence of carbon in the atmosphere of the earth is 0.03%, in the form of carbon dioxide. Compounds of Carbon Almost all carbon compounds (except a few) are poor conductors of the electricity. The diamond and graphite both are formed by carbon atoms; however, the difference lies between them in the manner in which the carbon atoms are bonded to one another. In diamond, each atom of the carbon, is bonded to four other carbon atoms and form a rigid three-dimensional structure (see the image given below). In graphite, each atom of the carbon, is bonded to three other carbon atoms in the same plane, which gives a hexagonal array (see the image given below) − There is also difference in some physical structu...
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