Dear Students:
Please watch the videos and answer the questions. Take some notes and prepare an exposition to present it to your friends, explaining what is carbon and oxygen cycle. You will need visual material, a poster (A4) in a cardboard.
Questions:
1. What is carbon?
2. Where is most of the carbon dioxide disolved?
3. How is the green house effect caused?
4. What is oxygen?
5. What is photosynthesis responsible for?
6. What are the main reservoirs of oxygen?
7. Why is the ozone layer important?
8. What does photosynthesis produce?
9. What is the other process that adds oxygen to the atmosphere?
10. Where do we find carbon?
Video 1: https://www.youtube.com/watch?v=YNd5p2HvYcg
Video 2: http://www.tutorvista.com/biology/animations/oxygen-cycle-animation
Video 3: http://www.tutorvista.com/biology/animations/carbon-cycle-animation
Dear students: Here is the link with the information we check in class about the Nitrogen Cycle. Please check it and copy it in your notebooks.
Nitrogen cycle: http://eschooltoday.com/ecosystems/the-nitrogen-cycle.html
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