What are examples of a scientific problem?

When Sandy met Johna scientist and critic she fell in love with him. Which word or phrase is an appositive in the sentence? What is a successful result of science a) a discovery b) curiosity c) an experiment? Tools that scientists use in science for measuring? What unit of measure would you use to measure the volume of a book? An experiment is done to see if eating breakfast affects students performance on exams is the experimental variable the scores on the exams? What are scientific unit? How does water sort particles? How cold and hot can a swamp get? How many cenimeters are in a foot? What would happen if you never cried? Do the steps in the scientific method always have to be followed in the same order? How did Newton's approach to understanding planetary motions differ from that of his predecessors? What metric unit of volume is used in Europe to measure gasoline? What is a sentence for supplant? What are two ways technology helps scientist? How could a microscope be a good gift? Is a control variable same as a constant variable? Which recovery method usually involves an evasion effort an is dependent on the ips condition? What is a tool that scientist would be least likely to use in a lab? Why liquids have indefinite shape but definite volume?