Question

Biogeochemical Cycles:

1. Carbon cycle- What are the ways that carbon dioxide is put into the atmosphere?

2. Carbon cycle-How is carbon dioxide removed from the atmosphere?

3. Carbon cycle-For each explanation, answer with photosynthesis or cellular respiration.

Releases carbon dioxide-

Takes in carbon dioxide-

Releases oxygen

Takes in oxygen-

4. Nitrogen cycle- How can atmospheric nitrogen become available for use by organisms?

5. Where are nitrogen fixing bacteria located?

6. Nitrogen cycle- How does soil nitrogen convert back into atmospheric nitrogen?

Limiting Factors:

Complete the T-chart describing density-dependent and density independent limiting factors on population growth.

Density- Dependent

Density- Independent

Make the answers short for 1-6 and make them seem like a 9th grader wrote them

Answers

GPT-4o mini
**Biogeochemical Cycles:**

1. **Carbon Cycle - Ways carbon dioxide is put into the atmosphere:**
- Combustion (burning fossil fuels)
- Decomposition of organic matter
- Cellular respiration

2. **Carbon Cycle - How carbon dioxide is removed from the atmosphere:**
- Photosynthesis (by plants)
- Absorption by the oceans

3. **Carbon Cycle:**
- Releases carbon dioxide: Cellular respiration
- Takes in carbon dioxide: Photosynthesis
- Releases oxygen: Photosynthesis
- Takes in oxygen: Cellular respiration

4. **Nitrogen Cycle - How atmospheric nitrogen becomes available for use by organisms:**
- Nitrogen fixation by bacteria converts nitrogen gas (N₂) into ammonia (NH₃) or other compounds.

5. **Where nitrogen-fixing bacteria are located:**
- They are mainly found in the soil and in root nodules of some plants, like legumes (e.g., peanuts, beans).

6. **Nitrogen Cycle - How soil nitrogen converts back into atmospheric nitrogen:**
- Denitrification by bacteria converts nitrates (NO₃⁻) back into nitrogen gas (N₂), releasing it into the atmosphere.

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**Limiting Factors:**

**Density-Dependent:**
- Competition for resources
- Disease spread
- Predation
- Stress from overcrowding

**Density-Independent:**
- Natural disasters (like floods or wildfires)
- Weather conditions (like droughts or extreme temperatures)
- Human activities (like deforestation)

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