Essay on Population was written by Darwin.

Answer

### Step-by-Step Solution:

1. **Identify the Statement**: The statement to evaluate is "Essay on Population was written by Darwin."

2. **Determine the Author**: The author of "An Essay on the Principle of Population" is not Charles Darwin. Instead, it was written by Thomas Robert Malthus.

3. **Clarify Darwin's Contributions**: Charles Darwin is known for his work on the theory of evolution, particularly through natural selection, and not for writing about population.

4. **Provide the Correct Information**: Malthus published his essay in the year 1798. The full title of the work is "An Essay on the Principle of Population."

5. **Conclude the Evaluation**: Since the statement incorrectly attributes the essay to Darwin, it is indeed a false statement.

### Final Conclusion:
The statement "Essay on Population was written by Darwin" is false. The correct author is Thomas Robert Malthus, who published the essay in 1798.

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