Ecosystem- Where do these organisms live? Primary consumer- Who eats the producers?
Secondary consumer- Who eats the primary consumers?
Producer- Who is turning solar energy into food for other organisms?
Decomposer- Who takes the dead stuff, and breaks it down into nutrients for other producers
Predator- Who is not eaten by anything else, except decomposers when they have died?

the molecules move in straight line until they collide with each other or with the walls of the container. collisions are perfectly elastic; when two molecules collide, they change their directions and kinetic energies, but the total kinetic energy is conserved.

explanation:

some sources quote the lethal dose, for an average 170lbs opiate-naive individual is between 75 and 375 mg

the electron configuration that you gave me has 16 electrons ergo it has 16 protons ergo it is the element sulfur.