2. What must happen for scientific theories to be accepted as valid?
A. A hypothesis must be upgraded with supporting experimental evidence
B. Biological manufacturers must conduct clinical trials
C. Scientific evidence must be reported, verified, and accepted by the scientific community
D. The research team must apply for and receive federal funding based on several early tests
3. Which of the following questions can be answered scientifically?
A. Is erosion control worth the financial costs?
B. Can planting cover crops reduce erosion?
C. What can be done to stop erosion?
D. Should we just let the river flow where it wants?
4. Eduardo is narrowing the focus of his science fair project and compiling a list of research questions his project can answer. Which of the following questions can be answered scientifically?
A. Which brand of bandage hurts more to remove?
B. Which brand of MP3 player sounds the best?
C. Which brand of orange soda do people prefer?
D. Which brand of sugar-free popsicle melts the fastest?