Ques: Q: What instruments used in guidance systems to indicate directions in space must have an angular momentum that does not change in direction? Choices: - actuators - elevators - magnets - gyroscopes A:
Ans: gyroscopes

Ques: Q: What is the name of a long and low hill of sediments which have been deposited by a glacier? Choices: - a mountain - a crag - a floodplain - a drumlin A:
Ans: a drumlin

Ques: Q: What is the term for evolution over geologic time above the level of the species? Choices: - mutation - speciation - microevolution - macroevolution A:
Ans: macroevolution

Ques: Q: Through which artery does blood enter the kidneys? Choices: - thoracic artery - jugular - cerebral artery - renal artery A:
Ans:
renal artery