(Question)
Q: All of the land drained by a river system is called its basin, or what "wet" term? Choices: - river bank - groundwater - wetlands - watershed A:
(Answer)
watershed

(Question)
Q: Through what system of the body do hormones generally travel? Choices: - respiratory - endocrine - excretory - circulatory system A:
(Answer)
circulatory system

(Question)
Q: What is the main element in organic compounds? Choices: - hydrogen - oxygen - nitrogen - carbon A:
(Answer)
carbon