Match the words with their definitions

• experiment
• professor
• evolution
• scientist
• biologist
• bacterium

1. [ ] - a test done in order to learn something or to discover if something works or is true;
2. [ ] - a teacher of the highest rank in a department;
3. [ ] - the way in which living things change and develop over millions of years;
4. [ ] - an expert who studies or works in one of the sciences;
5. [ ] - a scientist who studies the natural processes of living things;
6. [ ] - a type of very small organism that lives in air, earth, water, plants, and animals.