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☆☆☆☆☆The metamorphic process is the conversion of one mineral into another through heat and pressure over time. The metamorphic process is the conversion of one mineral into another through heat and pressure over time.
Early organisms created oxygen from other gases in the atmosphere.
More specifically, the methane atmosphere on Earth was supplanted by oxygen generated by microorganisms in the oceans. Today, the vast majority of our oxygen comes from the ocean - mainly plants. Earth came to have a oxygen atmostphere because that is the way God invisoned it, so thats how he made it.
Magma emplacements or Batholith are not sedimentary structures.
1 million
Paleozoic
Several periods of mass extinction
Batholith is an intrusive igneous body.
Coal forms from peat, and peat forms in bogs. There is not enough organic material in the arctic to form coal.
It must have lived for a short geologic period of time.
The geological processes, that are involved in changing igneous rock to sedimentary rock are; weathering, erosion, deposition and compaction.
A large asteroid colliding with the Earth would trigger a great cooling that might lead to some extinctions.
A large burning of fossil fuels (like we have been doing for 200 years) would trigger a great global warming that might lead to the extinction of all life on earth.
Shrinking of the polar ice caps
volcanic outgassing increased the greenhouse effect
