Normal polarity
Explanation:
Earth's magnetic field used to be twice as strong 1.5 billion years ago as it is today and Earth's temperature other than what the geologists see from the 'normal' pattern. It has been noticed that some volcanic rocks were magnetized in opposite direction to the direction of the local Earth's field. It is clear that the Earth has experienced the normal polarity 1.5 years ago but at that time, the Earth's polarity was poorly understood.
Answer:
Phagocytosis
hope this answer helps you....
The active production of useful plants or animals in ecosystems<span> that have been created by people.
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Endothermic change
Explanation:
Enthalpy changes are heat changes accompanying physical and chemical changes. There are two types of enthalpy changes: Endothermic change and exothermic change.
In an endothermic change, heat is absorbed from the surround and hence the surrounding becomes colder at the end of the change.
A change that leaves the reaction colder is an endothermic change.
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Exothermic change brainly.com/question/10567109
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the answer to this would be diffusion, where particles move from areas of high concentration to areas of low concentration!