I. 🍃Introduction
A. Explanation of the increase in popularity of cycling
B. Importance of helmets as complements to bicycles
C. Thesis statement: The increase in demand for bicycles will lead to an increase in demand for bicycle helmets due to various factors.

II. Increase in Environmental Awareness
A. Less driving and more cycling
B. Increase in demand for bicycle helmets due to safety concerns
C. Impact of environmental awareness on the demand for bicycle helmets

III. Increase in Health and Safety Awareness
A. Dangers of cycling without helmets
B. Increased awareness of the benefits of helmets
C. Impact of health and safety awareness on the demand for bicycle helmets

IV. Increase in Income
A. Bicycle helmets as normal goods
B. Positive income elasticity of demand for bicycle helmets
C. Impact of income on the demand for bicycle helmets

V. Increase in Subsidies for Bicycles
A. Decrease in the price of bicycles
B. Increase in demand for bicycles
C. Impact of subsidies on the demand for bicycle helmets

VI. Increase in Population
A. Increase in the number of cyclists
B. Increase in demand for bicycle helmets
C. Impact of population on the demand for bicycle helmets

VII. Reduction in Price of Helmets
A. Impact of price on the demand for bicycle helmets
B. Increase in demand for bicycle helmets due to reduced price

VIII. 👉Conclusion
A. Recap of the factors that lead to an increase in demand for bicycle helmets
B. Importance of wearing helmets while cycling
C. Final thoughts on the future of the demand for bicycle helmets.