Answer:
decade, century, period, era
For a scientific theory to be valid, i<span>t must be well tested, it must be widely accepted, and it must explain the observable facts.
A scientific theory is confirmed through observation and are usually widely accepted. </span>
The inner core is also believed to be moving at a different rate than the outer core. These swirling convection currents result in the earth's magnetic field which keeps us properly oriented for travel, and shields earth from deadly cosmic rays
Denudation was an important geological phenomenon in the Precambrian and Paleozoic ages in the Horn of Africa.
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What were the Precambrian and paleozoic epochs like?</h3>
The Precambrian (or Pre-Cambrian, or Cryptozoic) period of Earth's history before the present Phanerozoic Eon. The Precambrian is called after the Precambrian epoch, which preceded the Cambrian. The Precambrian period encompasses 88 percent of Earth's geologic history.
PALEOZOIC
The Paleozoic (or Palaeozoic) Era is the first of the Phanerozoic Eon's three geologic periods. The Cambrian, Ordovician, Silurian, Devonian, Carboniferous, and Permian epochs span 541 to 251.902 million years ago.
Thus, a major geological process of that era was denudation in the horn of Africa.
Learn more about the Paleozoic eras:
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Answer:
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