*Question*
Q: What is the transfer of thermal energy between particles of matter that are touching called? Choices: - convection - activation - radiation - conduction A:
**Answer**
conduction

*Question*
Q: What single-celled organism can be either a predator, decomposer, herbivore, or parasite in the food chain? Choices: - vertebrates - mites - Diatoms - protozoa A:
**Answer**
protozoa

*Question*
Q: When your body digests food, it breaks down the molecules of nutrients and releases what? Choices: - waste materials - gas - calories - energy A:
**Answer**
energy

*Question*
Q: Elements that specifically are noted to have properties of both metals and nonmetals are known as what? Choices: - compund metals - alloys - alkali metals - metalloids A:
**Answer**
metalloids