What is the singular possessive form of scientist?

What word inject DNA or RNA into the nucleus of a cell to reproduce? What is another name for herbivore's? What 3 kinds of energy are involved when a light bulb is turned on? When did fireworks come to America? Its atomic mass is 32.064? What was found in the infected bacteria? What would happen to other organisms in the salt marsh ecosystem if the cordgrass suddenly died? The name for the average sun-to-earth distance is? What does it mean to be a Kaseya agent? How bacteria help and hurt us? How many inches are in 25.8 cm? How many gms is one liter? What is 90 cm equal in a metert? Why amphibia failed to inhabit sea? Why do some liquids have greater viscosity than others? What is the difference between evaporation and boiling in terms of the movement of the liquid's particles in each case? Where did planets made mostly of gas and ice form within the protoplanetary disk? Why do asteroids and comets differ in composition? Are metastable isotopes used in medicine? What is 2feet 4 inches in meters?