Cluttered Earth

There are various ecosystems in the world that constitutes our planet. These ecosystems are built around stability. Their stability depends on environmental factors occurring in the system. Among the factors involved are many things that we can not control as people. Climate, weather, and the like are elements we can not mediate. However, human beings have a very important element of pollution. Contamination puts stability factors in a difficult position.

so. . . Why are we here? According to Kakumichio, Jupiter is an angel that defends us and deflects most of the scattering of asteroids, comets, and other universe that could kill us. The earth is a "golden girl's planet", it's not too hot, it's not too cold, and the atmosphere is not dense. The magnetic field and the ozone layer will deflect ultraviolet rays and will not let us live. How many "golden girls' planets" are in our galaxy? There may be hundreds of thousands, but it depends greatly on the old luck of the plane.

The future of humanity: Earth Mars, Star Trek, immortality and our destiny surpass the earth

The fact that the earth has a magnetic field is independent evidence of the core of the molten liquid. The compass magnet is aligned with the magnetic field everywhere on the earth. Since the magnetic minerals lose their magnetism when they exceed about 500 degrees Celsius, they can not make the earth a large permanent magnet. Almost all of the earth is hot, and the only other way to make a magnetic field is to circulate the current. The circulation and convection of conductive iron in the outer core of the earth creates a magnetic field. In order to generate a magnetic field, convection must be relatively fast (much faster than a plastic enclosure) and the core must be fluid. The majority of the energy that causes this convection arises from the growth of the solid core and releases energy as the iron changes from solid to liquid.

Throughout the geological era, the polarity of the Earth's magnetic field switched, resulting in reversed polarity. The Earth's magnetic field is generated by the current generated by the Earth's core convection. During magnetic reversal, the convection of the earth's core changes and the magnetic field may change. In the history, the earth's magnetic field has been reversed many times. When the magnetic north pole approaches the geographical north pole (as it is today), it is called normal polarity. When the magnetic north approaches the south pole, the polarity is reversed. Geologists were able to accurately identify when magnetic reversal occurred in the past by measuring the paleomagnetic polarity (called paleomagnetic) of volcanic rocks and sedimentary rocks using radiometric dating method. With such comprehensive observations, the geomagnetic polarity time scale (GPTS) was developed (Figure 6b).