parent rock, also sometimes substratum, is the original rock from which younger rock or soil is formed. In soil formation, the parent rock (or parent...

Parents for Rock and Rap, founded in 1987 by Mary Morello in the United States, was an anti-censorship campaign which focuses on campaigning for the importance...

non-parent or non-blood relations. Others may be adopted, raised in foster care, or placed in an orphanage. Parenting skills vary, and a parent or surrogate...

parent rock and be found and dated in younger rock formations. In January 2019, NASA scientists reported the discovery of the oldest known Earth rock...

most recently transported. Parent materials that are predominantly composed of consolidated rock are termed residual parent material. The consolidated...

A single parent is a person who has a child or children but does not have a spouse or live-in partner to assist in the upbringing or support of the child...

They develop by intensive and prolonged weathering of the underlying parent rock, usually when there are conditions of high temperatures and heavy rainfall...

used to refer to both the soil type and the mineral group which forms its parent materials. Serpentine soils exhibit distinct chemical and physical properties...

structure or mineral from a parent rock that did not undergo metamorphic change when the surrounding rock did, or a rock that survived a destructive geologic...

Bernard Marcel Parent (born April 3, 1945) is a Canadian former professional ice hockey goaltender who played 13 National Hockey League (NHL) seasons with...