Answer: B
Explanation: Because since the wildebeest eat grass and there is a increase in rain fall there will be more wilebeest for the cheetahs to eat and then more of them for the lions to eat
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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Answer: The Mpemba effect is a catch-all term for possible cases in which hot water appears to freeze faster than cold water. The phenomenon is temperature-dependent. There is disagreement about the parameters required to produce the effect and about its theoretical basis.
Explanation:
Answer:
Well...when dealing with problems related to blood pressure like hypertension etc., as a medical specialist, we mostly consider exercise plan that include aerobic and cardiovascular exercises. The main target of these exercises are heart muscles because anomaly in the rhythm associated with heart muscles are associated with major heart diseases and blood pressure problems.
The heart rate and blood pressure act in a way to compensate each other. When the heart rate rises, the pulse rate doesn't get rise in the same way because arteries dilate and expand to compensate the heart output and the blood pressure remains in range. It's action is like a buffer in chemistry. The rhythm of cardiac cycles are highly associated with the action and output given by cardiac muscles. Although they bare involuntary yet there strength is crucial for the proper rhythm of heart's cardiac cycle.
