In developing countries where populations consume low amounts of animal products or high amounts of plant products from nutrient poor soil, unusual nutrient deficiency diseases can occur. Sexual immaturity and short stature are symptoms of a deficiency of which nutrient?

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.