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:
Fossil fuels, smoking and mold.
Explanation:
Answer:
Not Pacific Coast or Midwest
Explanation:
The majority of the non- Anglo migrants throughout the 19th and 20th century were avoiding the West and Pacific Coasts because they were looking for the jobs, not for land. Majority of the immigrants came from Central, Eastern and Southern Europe. They all worked in the industries on the East side of America to earn a living to start a new life. Between 1880 and 1920 the country saw rapid industrialization and urbanization.
Answer:
Hello,
Ocean acidification is the ongoing decrease in the pH of the Earth's oceans, caused by the uptake of carbon dioxide (CO. 2) from the atmosphere. Seawater is slightly basic (meaning pH > 7), and ocean acidification involves a shift towards pH-neutral conditions rather than a transition to acidic conditions (pH < 7).
source: https://www.pmel.noaa.gov/co2/story/What+is+Ocean+Acidification%3F
Best regards
