Which of the following is an example of conserving resources in an ecosystem

Step 1: Analyze the question The question asks which option is an example of conserving resources in an ecosystem. Conservation means using natural resources wisely so they last for future generations and the ecosystem stays healthy.

Step 2: Explain the concept Conservation practices:

• Protect biodiversity
• Allow resources to regenerate
• Prevent pollution and habitat destruction

Practices that deplete, pollute, or disrupt the balance of an ecosystem are not conservation.

Step 3: Evaluate each option

• A. Excessive use of chemical fertilizers. This is harmful. Excess fertilizer runs off into rivers and causes eutrophication (algal blooms that kill fish), and it degrades soil. Not conservation.
• B. Introducing invasive species. Invasive species outcompete native species and upset the food web, which reduces biodiversity. Not conservation.
• C. Implementing sustainable fishing practices. Measures such as net-size regulations, fishing seasons, catch limits, and no-fishing zones let fish populations reproduce and recover. This is conservation. ✔
• D. Cutting down trees for timber production. Unregulated felling causes deforestation, soil erosion, and habitat loss. It is only conservation if paired with replanting, and the option doesn't say that. Not conservation.

Step 4: Answer The correct option is C. Implementing sustainable fishing practices.

💡 Exam tip: In conservation questions, look for keywords like sustainable, regulated, replanting, protecting, recycling. Be wary of words like excessive, invasive, indiscriminate, or clearing, which usually signal the wrong options.