What does 2ng means?

What is said about the way light reflects from the mirror? What do Proton-Transfer reactions favor? How long to items take to decay in the environment? What is a sculpting method that creates artwork by adding material to an underlying structure.? What are Sigma and pi bonds? What part of the plant by transports water and minerals from the roots to the leaves and other parts of the pant? What do homogeneous mixtures and heterogeneous mixtures have in common? What are the basic differences between laminar air flow and biosafety hood? What number will give you a idea on the number of valence electrons? What do you call 'plant Juices'? What is the white stuff formed at the bottom when caustic soda is mixed with water? Which is true of North America during the Mesozoic era? Why is the North American plate there? What does it mean for a brain tumor to be revealed at biopsy to be glioblastoma definition of which includes lack of differentiation but also seen to be well differentiated and well encapsulated? Why would invading and holding the South be difficult for the North? How many cells does protists? What is the abstract noun for the word strong? What is a Solar System that planets revolve around the earth? What are three types of polysaccharides? Which cites was not damaged by the eruption of Mount Vesuvius at all?