Final answer:
Organic foods are more expensive due to supply and demand. It is more useful to purchase organic fruits and vegetables with thin skins, as they tend to absorb more pesticides.
Step-by-step explanation:
Organic foods are typically more expensive than conventional foods due to the principles of supply and demand. As people become more aware of the harmful effects of chemical fertilizers, pesticides, and growth hormones used in conventional farming, there is a growing demand for safer, organic foods.
This increased demand has led to a shift in the demand curve, resulting in higher prices for organic foods. Producers have responded to the higher prices by supplying a greater quantity of organic foods, but the cost of producing organic foods, including the use of organic-certified materials and farming practices, contributes to their higher price.
When deciding which foods to purchase organic, it can be more useful to focus on the types of foods that are more susceptible to pesticide residue, as these are often the ones that benefit the most from organic farming practices.
For example, fruits and vegetables with thin or porous skins, such as strawberries, apples, and spinach, tend to absorb more pesticides. Choosing to buy these organic can reduce exposure to harmful chemicals.
On the other hand, foods with thick and protective outer layers, like bananas and avocados, are less likely to be affected by pesticide residue, making it less necessary to purchase organic versions.