Which processes represent one chemical change in one physical change

Which are examples of how technology has advanced scientific understanding.1using hot water to sterilize medical equipment.2transplanting a human organ into another individual.3inserting genes from one sheep into another cell to make a cloneunderstanding the different structures that make up a cell.4examining microorganisms from the deepest parts of the ocean

Which of the following are correct values for the ideal gas laws constant r

In one or two grammatically correct sentences, write a definition for the term molecule geometry