Q: To undo the tarnish on copper pennies, you can place them in what liquid? A:
OPTIONS:
- distilled water
- honey
- seawater
- vinegar
vinegar

Q: What do we call a peptide hormone composed of nine amino acids that lowers blood pressure? A:
OPTIONS:
- angiotensin
- parcnid
- bufotenin
- bradykinin

Answer: bradykinin

Question: Q: What results when birth rates fall even lower than death rates? A:
OPTIONS:
- disease
- mutation
- increased growth rate
- negative growth rate
Answer: negative growth rate

input with options: Q: Which process changes rocks by heat and pressure? A:
OPTIONS:
- sediments
- Changes
- weathering
- metamorphism
output: metamorphism

Q: Q: What is required to break bonds in reactants? A:

OPTIONS:
- food
- gas
- protein
- energy

A: energy

Q: Opportunistic diseases are usually the direct cause of death of people with what disease? A:
OPTIONS:
- heart
- parkinson
- liver
- aids
aids