Answer:
geomagnetic field.
Explanation:
The earth magnetic field can be likened to a bar magnet with a North and South pole. It originates from the movement of molten iron and nickel in the outer core.
At every point in time, the magnetic field orientation can change. We must note that the magnetic north lies close to that of geographic north axis of the earth.
Around the mid-oceanic ridges, new materials are brought to the surface. These new materials can contain magnetic minerals such as haematite which are capable of being magnetized as a result of the prevalent magnetic field of the earth. As different materials are brought up, the magnetic minerals preserves the details of the magnetic field at that point in time. Using this information can know the orientation of the magnetic field at any point in time if the magnetic history chart of the earth is constructed. Oceanic ridges becomes older as they move away from the divergent margins.
Answer:
should have payed attention in class
Explanation:
Because Europeans were explores and they found africa after asia did
Trees can serve a variety of purposes in the hospital such as shade for people to sit under, making the environment cool by releasing oxygen.
<h3>What is an Economic Tree?</h3>
The word economic may ring the idea of money, however, an economic tree is one that is planted to serve mankind in an array of ways.
It should be noted that the felling of economic trees is an offense under certain laws.
Learn more about Economic Tree here:
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Earth's Second Atmosphere The second atmosphere, which was the first to stay with the planet, formed from volcanic outgassing and comet ices. This atmosphere had lots of water vapor, carbon dioxide, nitrogen, and methane but almost no oxygen.
