Q: Q: Billions of what inside the human digestive tract help us digest food, make vitamins and play other important roles? Choices: - neurons - viruses - red blood cells - bacteria A:
A: bacteria

Q: Q: The fungus benefits from the constant supply of food produced by what? Choices: - the host - the spermatophyte - the phytoflagellate - the photosynthesizer A:
A: the photosynthesizer

Q: Q: Australia is home to many endemic species. the (a) wallaby (wallabia bicolor), a medium-sized member of the kangaroo family, is a pouched mammal, or this? Choices: - primate - placental - rodent - marsupial A:
A: marsupial

Q: Q: In what century was the microscope invented? Choices: - 20th - 16th - 15th - 17th A:
A: 17th