Heart transplant recipients can now days expect nearly a 90% 1 yr survival and 75% at 5 years. This therapy is for patients with end stage heart failure who otherwise have a poor quality of life and limited prognosis without transplant or lvad. ...
True Form Fossils True form fossils are when the actual plant or animal IS the fossil; that is, the whole organism has been preserved. The soft tissues of the organism never decay. These fossils are made when a plant or animal gets trapped in ice, tar, or amber. In a true fossil, the original features like the color and shape of the organism remain intact. This evidence gives scientists the BEST observation of past plants and animals. Create a free website
This is called a cast fossil. One form of fossil forms when an organism dies and its body is covered by layers of sediment. As time passes, the organism itself, particularly when composed primarily of softer materials, is eroded and carried away, leaving a negative imprint of its body. This type of fossil is called a mold. A cast fossil forms when a mold fossil is filled with some form of mineral, usually through the seepage of water depositing the minerals within the mold. In time, the mold is filled and the materials deposited harden, creating a replica of the original fossil. This is called a cast fossil.