1. Introduction
  1.1 Background and significance
  1.2 Objectives of the study
2. Literature Review
  2.1 Air pollutants and their sources
  2.2 Effects of air pollution on plants
  2.3 Mechanisms of plant response to air pollution
3. Methodology
  3.1 Selection of study sites
  3.2 Measurement and analysis of air pollutants
  3.3 Plant sampling and physiological measurements
  3.4 Data collection and analysis
4. Results and Discussion
  4.1 Analysis of air pollutant levels at study sites
  4.2 Effects of air pollution on plant growth and morphology
  4.3 Physiological responses of plants to air pollution
  4.4 Discussion of findings and comparison with existing literature
5. Implications and Recommendations
  5.1 Implications for plant conservation and ecosystem health
  5.2 Recommendations for air pollution mitigation strategies