Ques: Q: Lakes, ponds, streams, springs, and wetlands are? Choices: - salt water bodies - man-made structures - land formations - fresh water bodies A:
Ans: fresh water bodies

Ques: Q: Chemical symbols are useful to concisely represent the elements present in a substance. the letters usually come from the name of what? Choices: - month - scientist - discoverer - element A:
Ans: element

Ques: Q: Mendeleev organized what basic units into rows and columns? Choices: - solutions - compounds - animals - elements A:
Ans: elements

Ques: Q: In a controlled scientific study, what do you call a factor that can take on different values? Choices: - output - input - vector - variable A:
Ans:
variable