Gallery of Volcanic Rocks. Photo (c) Andrew Alden, licensed to About.com (fair use policy) Igneous rocks -- those which originate from magma -- fall into two categories: Extrusive and intrusive. Extrusive rocks erupt from volcanoes or seafloor fissures, or they freeze at shallow depths. This means that they cool relatively quickly and under low pressures, therefore they are typically fine grained and gassy.
on average it takes the human body approximately two to three hours to excrete a liter of water through the bladder this is dependent on several factors including the absorption of water the components in the water if dehydration is present the time of day and the general health of the person continue reading
National Cancer Institute. The bladder, part of the urinary system, is a hollow stretchable organ in the lower abdomen. Ureters carry urine from the kidneys to the bladder, and the bladder empties through the urethra. In the female, the bladder lies against the uterus and vagina; and in the male, against the rectum.