Which of the following is a possible source of water pollution?
a. storms
b. factories
c. farms
d. all of the above

What noticeable trend from this graph might be used to make a conclusion?

Which of the following best describes the relationship between glucose and complex molecules such as hormones?

Which best describes the scientific method? a. a path of clearly defined steps that must be followed in a particular order b. a possible answer to a scientific question based on knowledge or research c. the recipe for how to conduct an experiment that must be followed precisely d. the process of hypothesis and testing through which scientific inquiry occurs