A. Earth's magnetic field reverses over time; the changes show that seafloor spreading has taken place over time.
Explanation:
The pattern of the magnetic minerals in seafloor ridges are aligned in a repeating pattern because the earth's magnetic field reverses overtime.
This provides evidence because the changes shows that the sea floor spreading has taken place over time.
- The concept of sea floor spreading was first suggested by Harry Hess in the early 1960's.
- Using sophisticated tools, he was able to discover stripe patterns of magnetic minerals in rocks.
- The earth can be likened to a giant bar magnet
- The geomagnetic field originates from the core where the movement of molten metals induces magnetism.
- In a fresh cooling magma, the metallic minerals are able to align their domains with the prevailing magnetic field.
- At some point the magnetic field is normal with a very strong intensity. At other times the intensity is low and it reverses.
- The minerals keeps track of the changes.
- This leads to striped pattern that has been used to suggest sea floor spreading.
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False is my guess because thats like juging
and that wouldent make sense
Answer:
<em>Yersinia pestis.</em>
Explanation:
<em>Yersinia pestis</em> is a bacterial pathogen which is causing Plague. <em>Yersinia pestis</em> is found in animals which is transmit to humans through the fleas. Peoples get affected by the bite of fleas which have previously fed on <em>Yersinia</em> infected animals such as rat, mice, rabbit etc. It can be directly spread through by eating an <em>Yersinia </em>infected animals.
Peoples infected with plague generally showing flu-like symptoms such as fever, chill, headache, cough, weakness etc. Usually this begins 1-7 days after exposure.
Answer:
Coral reefs are built by coral polyps as they secrete layers of calcium carbonate beneath their bodies. The corals that build reefs are known as “hard” or “reef-building” corals. ... The coral polyps that build the reef survive by forming a symbiotic relationship with microscopic algae called zooxanthellae.
Answer: Nutrient pollution is caused when too many nutrients, primarily nitrogen and phosphorus, are added to water bodies. The excess nutrients act as fertilizers, causing excessive algae growth. It is common for nutrients to run off the land in urban areas, where lawn and garden fertilizers are used.
Explanation:
I explained in the top-
Hope it helps if it doesn't then whooops