The dose of a test drug that causes death in the animal during short-term toxicity testing is referred to as thea. control. b. effective dose. c. placebo. d. lethal dose.

Ibelieve the answer is d, lethal dose. i hope this . : 3

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).

What are the options? physical property can be color, smell, opacity, viscosity, density, infra red spectrum, melting and boiling points, attraction and repulson to magnets, etc.