Mention three harmful effects of pollution on human health.

Explanation

### Step-by-Step Solution:

1. **Understanding Pollution**: Begin by defining pollution as the introduction of harmful substances or contaminants into the environment, which can adversely affect human health.

2. **Identifying Respiratory Problems**: One of the primary harmful effects of pollution is respiratory issues. Air pollution can lead to conditions such as asthma, chronic bronchitis, and in severe cases, lung cancer. This is due to the inhalation of pollutants like particulate matter, carbon monoxide, and other toxic gases.

3. **Digestive Issues**: Another harmful effect of pollution is related to water pollution. Contaminated water can cause various digestive problems, including jaundice (a liver condition) and dysentery (an intestinal infection). These conditions arise from consuming polluted water that contains harmful bacteria and toxins.

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