• What is science? Describe the key elements of science.
• What is correlation in science? How is it different from a cause and effect relationship?
• Define scientific hypothesis and explain how it differs from a scientific theory and the more general use of the word theory by lay-people.
• What are the steps of the scientific method?
• What is atrazine and how does it affect tadpole development?

What are the differences between observational and experimental studies? Why did Tyrone Hayes and his team conduct both types of studies