Which of the following is made up of 2 different types of atoms?

Working with si (metric) units for each of the following commonly used measurements, indicate its symbol. liter gram milliliter kilogram meter centigram milligram centimeter kilometer second millimeter milliseconds

Which best describes how johannes kepler developed his laws of planetary motion

Apiece of metal with a length of 1.42 cm was measured using four different instruments. which of the following measurements is the most accurate?