Environmental Science Quiz: Carbon Cycle, Water Pollution, and Their Relationship

📚 Quick Study Guide

• 🌳 Carbon Cycle: The biogeochemical cycle where carbon is exchanged among the biosphere, pedosphere, geosphere, hydrosphere, and atmosphere of the Earth.
• 💨 Carbon Sources: Processes that release carbon dioxide into the atmosphere (e.g., burning fossil fuels, respiration, decomposition).
• 🌱 Carbon Sinks: Processes that remove carbon dioxide from the atmosphere (e.g., photosynthesis, absorption by oceans).
• 💧 Water Pollution: Contamination of water bodies, usually as a result of human activities.
• 🏭 Point Source Pollution: Pollution from a single, identifiable source (e.g., factory discharge).
• 🌧️ Non-Point Source Pollution: Pollution from diffuse sources (e.g., agricultural runoff).
• 🌊 Eutrophication: Excessive nutrient enrichment in water bodies, often leading to algal blooms and oxygen depletion.
• 🤝 Relationship: The carbon cycle and water pollution are interconnected through processes like ocean acidification (caused by increased atmospheric carbon dioxide) and the impact of pollution on aquatic ecosystems that are vital carbon sinks.

🧪 Practice Quiz

1. Which of the following is a major carbon sink?
   1. A. Deforestation
   2. B. Burning fossil fuels
   3. C. Oceans
   4. D. Volcanic eruptions
2. What process removes carbon dioxide from the atmosphere?
   1. A. Respiration
   2. B. Decomposition
   3. C. Photosynthesis
   4. D. Combustion
3. Which human activity contributes the most to increased atmospheric carbon dioxide?
   1. A. Composting
   2. B. Planting trees
   3. C. Burning fossil fuels
   4. D. Recycling
4. What is eutrophication primarily caused by?
   1. A. Acid rain
   2. B. Excessive nutrients
   3. C. Thermal pollution
   4. D. Radioactive waste
5. Which of the following is an example of point source pollution?
   1. A. Agricultural runoff
   2. B. Urban stormwater runoff
   3. C. Factory discharge
   4. D. Acid rain
6. How does increased atmospheric carbon dioxide affect the oceans?
   1. A. Decreases ocean acidity
   2. B. Increases ocean salinity
   3. C. Causes ocean acidification
   4. D. Has no effect on oceans
7. What is a consequence of deforestation on the carbon cycle?
   1. A. Increased carbon sink capacity
   2. B. Decreased atmospheric carbon dioxide
   3. C. Reduced carbon storage
   4. D. Enhanced photosynthesis