Q: What destroys the filtered pathogens? Choices: - parasites - neutrophils - antibodies - lymphocytes A:
lymphocytes

Q: Gases such as neon, argon, and krypton produce what using electroluminescence? Choices: - heat - colors - electricity - light A:
light

Q: Of all the electromagnetic waves, which have the lowest frequencies? Choices: - X-rays - ultraviolet rays - gamma rays - radio waves A:
radio waves