*Question*
Q: What is the transfer of thermal energy between particles of matter that are touching called? Read this paragraph and choose the correct option from the provided answers: Conduction is the transfer of thermal energy between particles of matter that are touching. Thermal conductors are materials that are good conductors of thermal energy. Thermal insulators are materials that are poor conductors of thermal energy. Both conductors and insulators have important uses. 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? Read this paragraph and choose the correct option from the provided answers: Protozoa generally feed by engulfing and digesting other organisms. As consumers, they have various roles in food chains and webs. Some are predators. They prey upon other single-celled organisms, such as bacteria. In fact, protozoa predators keep many bacterial populations in check. Other protozoa are herbivores. They graze on algae. Still others are decomposers. They consume dead organic matter. There are also parasitic protozoa that live in or on living hosts. For example, the protozoan that causes malaria lives inside a human host. For their part, protozoa are important food sources for many larger organisms, including insects and worms. 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? Read this paragraph and choose the correct option from the provided answers: Carbohydrates, proteins, and lipids contain energy. When your body digests food, it breaks down the molecules of these nutrients. This releases the energy so your body can use it. 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? Read this paragraph and choose the correct option from the provided answers: Metalloids are elements that have properties of both metals and nonmetals. Some can conduct electricity but only at certain temperatures. They may be shiny but brittle. All metalloids are solids at room temperature. Choices: - compund metals - alloys - alkali metals - metalloids A:
**Answer**
metalloids