Q: Mushrooms are an example of what type of organism, which includes beneficial and toxic specimens? Choices: - spores - bacteria - seeds - fungi A:
fungi

Q: A low level of radiation occurs naturally in the environment and is called what? Choices: - Gamma radiation - Beta radiation - Alpha radiation - background radiation A:
background radiation

Q: What can be used to mechanically separate the two elements by attracting the iron filings out of the mixture and leaving the sulfur behind? Choices: - centrifuge - laser - graduated cylinder - magnet A:
magnet