1.) What is TWO or more DIFFERENT atoms joined together by bonds such as NaCl or H20? 2.) What particles of an atom are negatively charged, found in the energy levels moving rapidly around the nucleus?

Between 2014 and 2016, more than 25,000 children in flint, michigan, drank water that was contaminated with lead from lead pipes. during this time, the city claimed the water was safe to drink. which of these actions could the city have taken to ensure that the drinking water was free from lead?

How do scientists think that gravity affected the formation of our solar system?

All cells are made of four types of acids, lipids, proteins, and carbohydrates.