How has the standard of living improved over the last 100 years

any abiotic or biotic factor in an ecosystem that causes a population's size to slow or decrease is a limiting factor.

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.