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 bioluminescence 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 |
---|---|---|---|
2016-03-03 | saramhl | 90.00 | Check this speaking |
2014-04-14 | Ekhlass1980 | 80.00 | Check this speaking |
2013-11-08 | Pinky123 | 85.00 | Check this speaking |
2014-04-14 | Ekhlass1980 | 80.00 | Check this speaking |
Speaking category
Speakings by user Ekhlass1980
:
- Many people think that many youngsters today are too materialistic, money-oriented and not charitable. Agree/Disag 70
- 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
- Q5 80
- how is lacking of sleep affect your life 80
- 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
24 in 30
Better this time. Don't need a conclusion. More content wanted.