Limestone is a carbonate sedimentary rock that is often composed of the skeletal fragments of marine organisms such as coral, foraminifera, and molluscs. Its major materials are the minerals calcite and aragonite, which are different crystal forms of calcium carbonate (CaCO3). (https://en.wikipedia.org/wiki/Limestone)
The broad-sense heritability of a trait is the proportion of phenotypic variance attributable to genetic causes. (Wang Y, Vik JO, Omholt SW, Gjuvsland AB. Effect of regulatory architecture on broad versus narrow sense heritability. PLoS Comput Biol. 2013;9(5):e1003053. doi: 10.1371/journal.pcbi.1003053. Epub 2013 May 9. PMID: 23671414; PMCID: PMC3649986.)
The narrow-sense heritability of a trait is the proportion attributable to additive gene effects. (Wang Y, Vik JO, Omholt SW, Gjuvsland AB. Effect of regulatory architecture on broad versus narrow sense heritability. PLoS Comput Biol. 2013;9(5):e1003053. doi: 10.1371/journal.pcbi.1003053. Epub 2013 May 9. PMID: 23671414; PMCID: PMC3649986.)
Abrasive wear occurs when a hard rough surface slides across a softer surface. ASTM International defines it as the loss of material due to hard particles or hard protuberances that are forced against and move along a solid surface (https://en.wikipedia.org/wiki/Wear#Abrasive_wear)
