This document outlines activities for students to learn about several biogeochemical cycles. It includes questions for students to answer about the water, carbon dioxide, nitrogen, phosphorus, sulfur, and mercury cycles. For each cycle, it asks about the overall process, which Earth systems are involved, important steps, and ecological issues. The goal is for students to understand how these essential elements are circulated and transformed through biotic and abiotic processes in the biosphere, hydrosphere, lithosphere and atmosphere. Any disruptions to these natural cycles could significantly impact Earth's climate and living organisms. The professor provides their contact information and thanks the reader for their attention.

1. Professor:
C. Dr. Uriel Francisco Santana Bejarano
Guadalajara, Jalisco April, 2018
“CYCLES OF MATTER”

2. Language department
2018-2019

3. Language department
2018-2019
Activity No.1 Water cycle1. What is the water cycle?
2. What type of cycle is it?
3. In which earth layers water cycle occurs?
4. Which stage of the cycle regulates the planet temperature?
5. What percentage of the planet is composed of water?
6. What percentage of water is located in the oceans?
7. Describe the evaporation and transpiration stages?
8. What is the percentage of atmospheric vapor contribution by water bodies and plants?
9. Describe the condensation stage?
10. Describe the precipitation stage?
11. What is the main ecological problem related to the water cycle?

4. Language department
2018-2019

5. Language department
2018-2019
Activity No.2 CO2 Cycle
1. What is the CO2 Cycle?
2. What type of cycle is it’?
3. In which earth layers CO2 cycle occurs?
4. What is function of the atmosphere in the CO2 cycle?
5. What is the importance of CO2 cycle for plants?
6. What is the role of animals in the CO2 cycle?
7. Design a diagram of the CO2 in the biosphere
8. What would happen with our planet in case that the CO2 disappear?
9. How humans have caused major changes to the CO2 cycle?
10. What is the main ecological problem of the CO2 cycle?

6. Language department
2018-2019

7. Language department
2018-2019

9. Language department
2018-2019
Activity No.3 Nitrogen Cycle
1. What is the N Cycle?
2. What type of cycle is it?
3. In which earth layers N cycle occurs?
4. What are the sources of atmospheric N?
5. What is the importance of the biosphere in the N cycle?
6. What is the role of bacterias in the N cycle?
7. What happen during the ammonification step?
8. What happen during nitrification step?
9. What happen during denitrification step?
10. What is the main ecological problem of the N cycle?

10. Language department
2018-2019
Phosphorous cycle

11. Language department
2018-2019
Phosphorous cycle

12. Language department
2018-2019
Phosphorous cycle activity
1. What is the P cycle?
2. What type of cycle is it?
3. In which earth layers P cycle occurs?
4. What is the main characteristic of P cycle?
5. Why the atmosphere does not play a significant role in P cycle?
6. Which is the main ecological problem in P Cycle?
7. What happen when there is a low concentration of P?
8. What is the role of the soil microorganisms in the P cycle?
9. How humans have caused major changes to the P cycle?

13. Language department
2018-2019
Phosphorous cycle

14. Language department
2018-2019
Phosphorous cycle

15. Language department
2018-2019
Sulfur cycle activity
1. What is the S cycle?
2. Where can we find S in the living organisms ?
3. Where is stored the majority of S in our planet?
4. Which earth layers includes S cycle processes?
5. How is the S reduction process in the ocean made?
6. What compound of S does plants uptake from soil?
7. What compound of S is released from the soil to the atmosphere?
8. How humans are involved in the S cycle?

16. Language department
2018-2019

17. Language department
2018-2019
Mercury cycle activity
1. What is the Hg cycle?
2. What type of cycle is it?
3. Which earth layers includes Hg cycle processes?
4. Where can we find Hg in the living organisms ?
5. Which is the main source of organic Hg for humans?
6. Describe the Hg process in atmosphere?
7. Describe the Hg process in the hydrosphere?
8. How humans are involved in the Hg cycle?
9. What is the main ecological problem of the Hg cycle?

18. Language department
2018-2019

19. Language department
2018-2019

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2018-2019

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2018-2019

23. e-mail: uriel.santana@tepeyac.mx
Thanks for your attention