In living things what is the source of the carbon-14 that is used in radiocarbon dating

What does x represent in the formula for the compound xcl4?

Margaret wants to make an orange flavored drink by stirring powdered drink mix into a glass of water. she doesn't like drinks that have small clumps of powdered solid in them, so she wants the drink to be a perfect solution. what factors should margaret not consider when deciding how much powder to add to her glass of water?

Which statement best explains the relationship between an area is geography and the temperature of its surface water