21. KARST TOPOGRAPHY: limestone, chalk, or gypsum base. Great sinkholes and caverns can form, caves. This type of rock can absorb water well (or have lots of cracks to accept water) and the water dissolves the rock.
3CHEMICAL ANALYSIS:basic chemical analysis: H2O + CO2 = H2CO3 water + carbon dioxide in atmosphere = bicarbonatewater falling mixes with CO2 to make an acid. The acid mixes with limestone to make soluable bicarbonate (in the water). This forms cave formations like stalactites etc. when the water evaporates.
19BASICS OF GROUNDWATER: Zone of aeration: where air pockets in soil are dryZone of saturation: where air pockets in soil are filled with waterWater table: the top of the zone of saturationWhere can you find ground water????