Q: In what unit is frequency measured in? Choices: - mole - centimeter - gram - hertz A:
hertz

Q: What machine is used to determine the calories in food, as well as the average heat yield from burning various grades of coal and oil? Choices: - radio telescope - thermometer - alethiometer - calorimeter A:
calorimeter

Q: Roundworms exemplify what type of organization, where two or more types of tissues work together to perform a particular function as an organ? Choices: - bone-level organization - land-level organization - delicate - level organization - organ-level organization A:
organ-level organization