Could the extinction of Steller's sea cow and passenger pigeon be saved by man? Give reasons to support your answer.

Explanation

**Step-by-Step Solution:**

1. **Introduction to Extinction**: Begin by stating that Steller's sea cow and passenger pigeon are two species that became extinct due to human activities. Their extinction occurred approximately 500 years ago.

**Hint**: Introduce the topic by mentioning the timeline and the species involved.

2. **Reasons for Extinction**: Explain that both species were hunted excessively. The passenger pigeon was primarily hunted for its meat in North America, while the Steller's sea cow was hunted for its fur and meat by sailors and fur traders in Russia.

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