To qualify for sick leave, an employee must: 1  Work for the same employer, on or after January 1, 2015, for at least 30 days within a year in California, and.  Satisfy a 90-day employment period (similar to a probationary period) before taking any sick leave.
In replacement fossils the body dissolves and minerals are left in its place. In permineralization, the water enters the cells of the organism and deposits minerals in the spaces inside them. Petrified wood is a permineralized fossil. Whole Body Fossils. Whole body fossils occur when an entire organism, including soft tissues, is preserved. Examples include insects entombed in tree sap, which hardens to become amber, and mammoths encased in ice. Footprints and Trackways. Footprints made by prehistoric animals walking through the mud sometimes harden and become fossils.
Please try again later. Fossils are the stone remains of animals or plants that were once alive. Fossils can be the bones of a dead dinosaur or his big footprints in the sand. Usually only the skeletons of animals are left after millions of years.But sometimes a whole animal, like a woolly mammoth, gets trapped in ice.lease try again later. Fossils are the stone remains of animals or plants that were once alive. Fossils can be the bones of a dead dinosaur or his big footprints in the sand. Usually only the skeletons of animals are left after millions of years.