Porous example sentences

Humus is a major factor in deciding the soil structure because it causes the soil to become more porous and allows water and air to penetrate deep underground.The gymnosperms are heterosporous; they produce haploid microspores and megaspores.Genera like Selaginella and Salvinia which produce two kinds of spores, macro (large) and micro (small) spores, are known as heterosporous.Being highly porous, activated charcoal is used in adsorbing poisonous gases; also used in water filters to remove organic contaminators and in airconditioning system to control odour.The porous cellophane membrance of the tube allows the passage of molecules based on concentration gradient.In majority of the pteridophytes all the spores are of similar kinds; such plants are called homosporous.The oil and gas seeped into the porous parts of the rock, and got trapped like water in a sponge.The oil bearing layer is a porous limestone or sandstone through which oil may flow.Petroleum is also found in fault traps between porous and non-porous rocks.The oil is prevented from rising or sinking by intervening non-porous layers.