Match the following terms with their appropriate impact on the environment: Choose the correct answer from the options given below:

Acidification involves the lowering of pH levels in aquatic environments, primarily due to the absorption of excess atmospheric CO₂. Urbanization leads to habitat loss and often increases pollution due to higher population densities and industrial activities. Overfishing has long-term detrimental effects on fish populations and can disrupt entire marine ecosystems. Afforestation, the process of planting trees in non-forest areas, increases forest cover and contributes to ecological balance.