Q: What is the transfer of thermal energy between substances called? Choices: - Permeation - Diffusion - Radiation - heat A:
heat

Q: A rusty bike has been left outside in damp weather too many times, so the iron in the metal parts have? Choices: - melted - eroded - decayed - rusted A:
rusted

Q: Q: The mechanical and digestive processes have one goal: to convert food into molecules small enough to be absorbed by the epithelial cells of what? Choices: - bile ducts - stomach cilia - alveoli - intestinal villi A:
A: intestinal villi

Question: Q: What do you call a substance that cannot be separated into smaller pieces, which is also defined by the number of protons it has? Choices: - electrol - molecule - atom - element A:
Answer: element

*Question*
Q: Birds adapted wings and weathers for flight during what process? Choices: - migration - variation - emergence - evolution A:
**Answer**
evolution

*Question*
Q: What type of organism is used to produce alcoholic beverages and bread? Choices: - bacteria - larvae - insects - yeast A:
**Answer**
yeast