What is the relationship between solvation and hydration?

Define dew point. i am writing this part to be able to ask the question

Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together

Amap that uses a range of colors and shading to represent the elevation, depth, or landscape of specific features on earth is a/an map.