Q: Duckweed and cattails serve what role in the food chain in freshwater biomes? Choices: - tertiary consumer - secondary consumer - primary consumer - primary producer A:
primary producer

Q: An electormagnet is a piece of iron inside a? Choices: - copper core - tunnel - reactor - solenoid A:
solenoid

Q: Q: The structural classification of joints divides them into bony, fibrous, cartilaginous, and synovial joints. the bones of fibrous joints are held together by fibrous connective tissue; the three types of fibrous joints are sutures, syndesomes, and what? Choices: - articular - cartilaginous - synchondrosis - gomphoses A:
A: gomphoses

Question: Q: The minimum amount necessary for self-sustained fission of a given nuclide is called what? Choices: - its half-life - its molar mass - its activation energy - its critical mass A:
Answer: its critical mass

*Question*
Q: A chemical property describes the ability of a substance to undergo a specific what? Choices: - weight Change - radiation change - liquid change - chemical change A:
**Answer**
chemical change

(Question)
Q: A catalytic converter filters pollutants in exhaust created by burning what before releasing it into the air? Choices: - carbon dioxide - noble gas - fossil compounds - fossil fuels A:
(Answer)
fossil fuels