Short Answer: there are only 28 clown fish.
Answer:
matter
Explanation:
"In thermodynamics, a closed system can exchange energy (as heat or work) but not matter, with its surroundings"
B) It's known as a Fault. That's why they say "Don't drill on a fault line," because when fault lines move they cause earthquakes, and other occurrences.
Answer:
They have a backbone, most use legs,wings,or fins for movement.
