Paleomagnetism is. Question 8 options: The equipment tied to boats to measure their depths The rock that solidifies from mid ocean ridges The evidence that fossils across continents matched The study of the magnetic qualities of ancient rocks.

oxygen = 21% of the atmosphere

nitrogen = 78%

carbon dioxide = 0.1%

argon =0.934%

phaneritic textures in which phaner means visible so phaneritic textures are standard of impertinent volcanic rocks. these rocks crystallized gradually under the surface of earth. when the magma cools deliberately then the ores have chance to develop and produce long crystals.

some inherited genetic mutations can be good for the offspring, so the answer is different genetic mutations cause many forms of cancer.