Ques: Q: Geysers are created when what is heated beneath the earth's surface? Choices: - magma - gases - air - water A:
Ans: water

Ques: Q: What do all respiratory diseases affect? Choices: - liquid exchange process - helium exchange process - transit exchange process - gas exchange process A:
Ans: gas exchange process

Ques: Q: Scientists use the principles of what to make predictions, which they then test? Choices: - their teachers - their guesses - their faith - their hypothesis A:
Ans: their hypothesis

Ques: Q: What is the lowest layer of the atmosphere called? Choices: - mesosphere - lithosphere - asthenosphere - troposphere A:
Ans:
troposphere