Deana applies the data in the table to calculate the rate of population increase or decrease of each country. Which assumption is necessary for Deana’s calculations to be accurate?

Match each term to its scientific definition. a)natural world b)scientific method c)theory 1) everything that can be observed or explained scientifically 2) a well-supported explanation of all the evidence related to a natural phenomenon 3) the procedure of scientific inquiry used to investigate natural phenomena