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
How your bladder works. he lower part of your abdomen (belly) and acts as a temporary store for your urine. Urine is the waste fluid produced by your kidneys when they clean your blood. It travels from your kidneys to your bladder, which then fills with urine.The muscles of the bladder allow it to expand, rather like a balloon.When it becomes full, you get the urge to pass urine (urinate). When you pass urine, it leaves the bladder and travels through your urethra â the tube that carries urine outside of your body, often called the water pipe.he muscles of the bladder allow it to expand, rather like a balloon. When it becomes full, you get the urge to pass urine (urinate). When you pass urine, it leaves the bladder and travels through your urethra â the tube that carries urine outside of your body, often called the water pipe.