instruction:
Given a scientific passage and an answer, generate a question for the given answer.
question:
Passage: Excretion is the process of removing wastes and excess water from the body. It is one of the major ways the body maintains homeostasis. Organs of excretion make up the excretory system. They include the kidneys, large intestine, liver, skin, and lungs. Answer: excretion
answer:
What is the process of removing wastes and excess water from the body?

question:
Passage: There are no forces of attraction or repulsion between gas particles . Attractive forces are responsible for particles of a real gas condensing together to form a liquid. It is assumed that the particles of an ideal gas have no such attractive forces. The motion of each particle is completely independent of the motion of all other particles. Answer: superscripts
answer:
Which measure indicates the number of electrons in a given sublevel?

question:
Passage: Matter can be described with both physical properties and chemical properties. Answer: physical and chemical
answer:
Matter can be described with what two encompassing types of properties?