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Physical universe:
The universe is vast. The Earth we live on appears to be just a speck of dust circling a small star in a remote corner of an obscure galaxy. If we are a speck in the immense space, we also occupy dnly an instant in the expanse of time. The universe is also very old. We now know that it is about fifteen or twenty billion years OM, while we, the human beings have been around for only two million years or so. This vast and ancient universe is populated with a variety of objects. Let us now understand what objects constitute the universe and how they are distributed. In other words, what the physical structure of the universe is. In doing so, we will not go into its chemical composition or aoy other details. However, before we embark on this venture, we will give you an idea of the cosmic distances, so that you're able to appreciate what follows.
Explain parasympathetic Nerves System Another system that runs parallel to the sympathetic system is termed as the parasympathetic system. This system has an effect just opposi
Explain the Process of Respiration Respiration is the process which deals with the act of respiring or breathing, the act of taking in and giving out air, the aggregate of thos
Solar energy: The energy we get today from the fossil fuels like coal, is in reality sun's energy, trapped in them millions of years ago. Plants make their food and grow bec
Explain Skin Secretions - External Defence Mechanism The oil and sweat secreted by sebaceous and soporiferous glands contains fatty and lactic acids, which makes the surface of
First Hominids The First Human Fossil The earliest human like or hominid remains come from two separate East African sites. Ethiopia has yielded several hundred fossil fragment
world map
Explain Transport of Oxygen by Red Blood Cells Oxygen combines with haemoglobin, i.e., the red pigment in red blood cells. It combines with oxygen in the lungs, transports it a
In what ways does over-grazing lead to soil erosion?
What is Webblog?
Oxidising Substances : It includes oxidising substances and the organic peroxides. Oxidising substances are by themselves not combustible but by feeding oxygen to other substances
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