The Grignard reaction (French: ) is an organometallic chemical reaction in which alkyl, allyl, vinyl, or aryl-magnesium halides (Grignard reagent) is added to a carbonyl group in an aldehyde or ketone. This reaction is important for the formation of carbon–carbon bonds. What is Grignard reagent and its importance? Grignard reactionRead More →

Pine tar is a sticky substance that is produced by high carbonization of pine wood. It is used to help hitters get a better grip on the bat. In the MLB, wood bats are all that is allowed and the pine tar is used to provide a better grip forRead More →

Transects and quadrats are two ecological tools that allow us to quantify the relative abundance of organisms in an area. To track changes over time, it is important to be able to quantify changes in abundance. What is the importance of transect chart? A transect helps identify problems to thenRead More →

: a short story that teaches a moral or spiritual lesson especially : one of the stories told by Jesus Christ and recorded in the Bible. What do the parables teach us? The parables tell us that: It is present in the lives of those who believe. People respond differentlyRead More →

​Nail Brush Insert the ring finger and pinky in the nail brush handle and brush the nails with a downward motion from the base to the fingertips to clean the nails and fingers. What is a hand and nail brush? HAND & NAIL BRUSH contains two lengths of durable nylonRead More →

Feathers are widely believed among North American Indians to signify the connection between The Creator, the owner of the feather, and the bird from whom the feather came. … Deeply revered, the feather symbolizes high honor, power, wisdom, trust, strength, and freedom. Why do Native Americans wear bandanas? Native AmericansRead More →

Worn on the heads of male dancers, ci-wara headdresses are danced in male and female pairs to symbolize the fertility of land and animals. Each headdress represents an antelope, which for the Bamana is a metaphor for the successful farmer who tirelessly tills his fields. What is the function ofRead More →

The price of WoW Classic is simply the price of a WoW subscription. No additional purchase required—you don’t need to go out hunting for an original boxed copy of World of Warcraft. Those who already subscribe to WoW will have WoW Classic included in the price of their subscription. IsRead More →

A technique for obtaining accurate measurement of the size and position of the internal organs using radiographic apparatus. A radiographic procedure used for the accurate measurement of long bones. What is the maximum allowable tabletop intensity in high level control? What is the maximum allowable tabletop intensity in high-level controlRead More →