Which of the following is a recently originated problem of environment?

Options

A. Ozone layer depletion
B. Greenhouse effect
C. Global warming
D. All of these

Explanation

To determine which of the following is a recently originated problem of the environment, we can analyze the options provided:

1. **Ozone Layer Depletion**: This refers to the thinning of the ozone layer in the stratosphere, primarily caused by the release of chlorofluorocarbons (CFCs) from industrial products like air conditioners and refrigerators. This issue became prominent in the late 20th century, particularly after the industrial revolution, making it a relatively recent environmental problem.

2. **Greenhouse Effect**: This is a natural process where the Earth's surface warms as it absorbs sunlight and re-radiates heat. However, human activities have intensified this effect, leading to global warming. The concerns surrounding the greenhouse effect have also gained attention in recent decades, especially post-industrial revolution.

3. **Global Warming**: This is the result of excessive greenhouse gases in the atmosphere, leading to an increase in Earth's average temperature. It has severe consequences, including melting polar ice caps and rising sea levels. Like the other issues, global warming has become a significant concern only in recent times, particularly since the industrial revolution.

After analyzing these options, we can conclude that all these environmental problems have emerged relatively recently, especially after the industrial revolution. Therefore, the correct answer to the question is:

**Answer: All of the above (Option D)**

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