1. Which of the following does not use radiation but magnetism instead? A. all of these

B. CT Scan

C. x-ray

D. MRI

E. none of these

2. Select 2 that apply.

Figure out which step in the scientific method is being used.
"I wonder why the lake is brown today?"

A. problem question

B. observation

C. analyze data and draw conclusions

D. experimentation

E. report results

F. hypothesis

3.Choose True or False.
Electron microscopes are the best tool for use on living things.

A. True

B. False