<span>When magma reaches the surface through a volcano, it is called lava. When lava cools, it forms extrusive igneous rock. The process by which rocks are worn down by wind and water, creating sediment.</span>
T<span>he Great Migration (in East Africa, mainly Kenya and Tanzania) is principally herds of wildebeest and zebra following their food and water supply.</span>
Answer:
the reason fossil fuels are so readily used is because they are readily available. countries in the middle east, as well as russia, the us and a few south american countries have large oil reserves that are currently used to supply the world's demand for energyy
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and brainiest would be appreciated :P
Answer:
The Great Oxidation Event (GOE), sometimes also called the Great Oxygenation Event, Oxygen Catastrophe, Oxygen Crisis, Oxygen Holocaust, or Oxygen Revolution, was a time period when the Earth's atmosphere and the shallow ocean experienced a rise in oxygen, approximately 2.4 billion years ago (2.4 Ga) to 2.1–2.0 Ga during the Paleoproterozoic era.
Explanation:
Please mark as brainliest please
Democracy is the correct answer
