I neds help plez! I can't figure this out

Is snow a type of precipitation? explain why or why not.

Which is a genetic engineering advancement directly related to a career in biotechnology? 1) improving solar energy collection 2) transporting textiles at higher rates 3)creating crop foods that resist insect pests 4)repairing historical sites with quality materials

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer