Only some vegetables are better for you raw than they are cooked. It depends on the specific vegetable, cooking method, and the person.
Food and drink is a broad category referring to all things related to the consumption, preparation, and appreciation of food or drink. Things pertaining to nutrition and diet may be classified under Diet and Nutrition or elsewhere in Health and Fitness, while things pertaining to the botanical nature of food and drink may be classified under Fruits and Vegetables or elsewhere in the Natural and Physical Sciences.
Both animal-derived and plant-derived food production has consequences, but meat production is worse for the environment in most cases.