Paramecia are attracted by acidic conditions, since they eat bacteria, which often acidify their surroundings. It can also acidify acid sulphate soils as it lowers the water table. Both sulfur and nitrogen deposition can acidify surface waters and soils. The release of CO into the blood causes it to acidify by forming carbonic acid. Upon further acidification "Ferroplasma" will also develop and further acidify. The extreme precipitation will cause the oceans to warm and acidify. Increased N deposition can acidify soils, streams, and lakes and alter forest and grassland productivity. It is used in baking to leaven and acidify bread. It also can acidify other surfaces it touches or be washed into the ocean. The emissions were large enough to acidify the rainfall. Deep ocean storage is not used, because it could acidify the ocean. V-ATPases in the acrosomal membrane of sperm acidify the acrosome.