Before you watch the lecture, it is important that you understand 10 key words. For each of the definitions below, choose the correct word.
1. One or more reasons for believing that something is or is not true.
2. Causing disagreement or discussion
3. The part of the Earth's environment where life exists.
4. A person who doubts or is uncertain about the truth or value of an idea or belief.
5. To interrupt or affect negatively a state or situation
6. The process by which a plant uses the energy from the sun to produce its own food.
7. All the living things in an area and the way they affect each other and the environment.
8. A strong personal interest in something because you could get an advantage from it.
9. The state of needing something or someone all the time, especially in order to keep living or operating.
10. People's ability to find clever new ways of doing something.
Congratulations - go on to the next exercise.
You have some incorrect answers (in red). Please try again.
