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

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

Q: Q: Which process changes rocks by heat and pressure? Choices: - sediments - Changes - weathering - metamorphism A:
A: metamorphism

Question: Q: What is required to break bonds in reactants? Choices: - food - gas - protein - energy A:
Answer: energy

*Question*
Q: Many transition metals and their compounds are used as what? Choices: - insulators - bases - sealants - catalysts A:
**Answer**
catalysts

(Q).
Q: The creation of a voltage across a current-carrying conductor by a magnetic field is known as what? Choices: - off effect - newton effect - show effect - hall effect A:
(A).
hall effect