Erg (landform) when liquid methane rained and eroded the ice bedrock, possibly in the form of flash floods. Alternatively, the sand could also have come from organic solids produced by photochemical reactions in Titan's atmosphere. Erg (landform) An erg (also sand sea or dune sea, or sand sheet if it lacks dunes) is a broad, flat area of desert covered with wind-swept sand with little or no vegetative cover. The term takes its name from the Arabic word "ʿarq" (), meaning "dune field". Strictly speaking, an erg is defined as a desert area that contains more than of aeolian or wind-blown sand
What Are Little Boys Made Of? by Roud number What Are Little Boys Made Of? "What Are Little Boys Made Of?" is a popular nursery rhyme dating from the early 19th century. It has a Roud Folk Song Index number of 821. The author of the rhyme is uncertain, but may be English poet Robert Southey (1774–1843). Here is a representative modern version of the lyrics: <poem> What are little boys made of? What are little boys made of? That's what little boys are made of What are little girls made of? What are little girls made of? That's what little girls are made of</poem> The