给出以下话题两分钟以内英语topic的提纲：肿瘤的发生与环境因素更相关还是遗传因素

Introduction:

• Explanation of the topic: The relationship between cancer development and environmental and genetic factors.
• The importance of understanding the causes of cancer.

Body: I. Environmental factors:

• Explanation of different types of environmental factors that can lead to cancer, such as exposure to carcinogens in the workplace or pollution.
• Statistics and research studies that show the link between environmental factors and cancer development.
• Examples of preventable environmental factors that can reduce the risk of cancer, such as quitting smoking or avoiding exposure to UV radiation.

II. Genetic factors:

• Explanation of how genetic mutations can increase the risk of cancer.
• Research studies that show the link between genetic factors and cancer development.
• Examples of hereditary cancer syndromes, such as BRCA mutations, that increase the risk of certain cancers.

III. The interplay between environmental and genetic factors:

• Explanation of how environmental factors can interact with genetic factors to increase the risk of cancer.
• Examples of how lifestyle choices, such as diet and exercise, can influence the expression of genes and reduce the risk of cancer.

Conclusion:

• Recap of the main points discussed.
• Emphasis on the importance of understanding the interplay between environmental and genetic factors in cancer development.
• Call to action for individuals to make lifestyle choices that reduce their risk of cancer.