Speaking topics in text
Bioluminescence
Bioluminescence occurs when organisms convert chemical energy into visible light. This happens when a chemical reaction involving oxygen and two other molecules takes place. During this reaction, light of varying colors may be emitted. The great majority of organisms that use bio-luminescence are found deep in the oceans depths. This ability to produce light serves a variety of functions. Organisms may use it to do anything from escape their predators to find food.
Online speaking recording
Votes
This speaking topic by users
| Post dates | Users | rates | Contents |
|---|---|---|---|
| 2013-11-08 | Pinky123 | 85.00 | Check this speaking |
| 2016-03-03 | saramhl | 90.00 | Check this speaking |
| 2014-04-14 | Ekhlass1980 | 80.00 | Check this speaking |
| 2014-04-14 | Ekhlass1980 | 80.00 | Check this speaking |
Speaking category
Speakings by user Ekhlass1980
:
- 25. Some people like to spend their leisure time outdoors, while others prefer to spend it indoors. Which do you prefer? 80
- When you have a question, do you prefer asking instructors for the answer or finding the answer for yourself through resources such as books or the Internet? Use specific reasons and examples to support your answer. 70
- Q3 65
- Some people prefer outdoor activities. Other people prefer indoor activities. Which do you prefer? Use specific reasons and examples to support your answer. 75
- q5 80
23 in 30
Not good for last 15 seconds.