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 |
|---|---|---|---|
| 2014-04-14 | Ekhlass1980 | 80.00 | Check this speaking |
| 2014-04-14 | Ekhlass1980 | 80.00 | Check this speaking |
| 2016-03-03 | saramhl | 90.00 | Check this speaking |
| 2013-11-08 | Pinky123 | 85.00 | Check this speaking |
Speaking category
Speakings by user Ekhlass1980
:
- What is the most important or memorable writing, poem, or letter you have written and why is it important to you? Use specific reasons and details to support your answer. 80
- Q3 85
- q6 10
- do agree or disagree? learning through online courses is more effective than learning in the traditional classroom setting 80
- talk about a place you enjoyed going or visiting when you were a child 80
23 in 30
Not good for last 15 seconds.