Q: What is rusting an example of? Choices: - radiation change - Decomposition - contamination change - chemical change A:
chemical change

Q: What are the three types of rna involved in protein synthesis? Choices: - messenger, organic and transfer - messenger, transfer, and organic - organic , transfer , and ribosomal - messenger, transfer, and ribosomal A:
messenger, transfer, and ribosomal

Q: Q: What natural part of the water cycle can cause damage and death? Choices: - clouds - evaporation - expiration - floods A:
A: floods

Question: Q: Alveoli can be found in which organ in the human body? Choices: - Stomach - Liver - Heart - lungs A:
Answer: lungs

*Question*
Q: During adolescence, what causes most of the changes associated with puberty? Choices: - estrogen - nicotine - methane - testosterone A:
**Answer**
testosterone

(Q).
Q: Which types of waves are used for cell phones and radar? Choices: - light waves - thermal waves - sound waves - microwaves A:
(A).
microwaves