Problem: OPTIONS:
- plasma membrane
- proton
- neutron
- electron
Q: Q: The elements are arranged in rows, each representing the filling of what shell? A:
Answer: electron

Problem:OPTIONS:
- dinosaurs
- arthropods
- staurikosaurus
- lepidosaurs

Q: Tuataras, lizards, and snakes are members of what subclass of reptiles? A:
****
A: lepidosaurs

Q: In what form of matter is hydrogen at room temperature? A:
OPTIONS:
- dissolved
- liquid
- solid
- gas
gas

Q: What is the term for the stalk connecting a leaf to a stem? A:
OPTIONS:
- cuticle
- blades
- base
- petiole

Answer: petiole

Question: Q: Which forces hold particles together in more ordered states? A:
OPTIONS:
- natural
- gravitational
- particular
- intermolecular
Answer: intermolecular

input: OPTIONS:
- initial decay
- thermal decay
- radioactive decrease
- radioactive decay Now, answer this question: Q: What is the breakdown of unstable elements into stable elements called? A:
A:
output:
radioactive decay