Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to celebrate earth day as a gardener [title] Research fertilizers and pesticides that are less harmful to the environment. [step] Go through your current products to see if they have potential negative effects on organisms, soil, water or air quality. Replace your products with natural, non-harmful products.

Ending1: [substeps] Avoid overuse of organic pesticides and fertilizers. They can be harmful to microorganisms that are found in nutrient rich soil. Ending2: [substeps] Look online to see what options may be available for the types of fertilizers you are concerned about. There is no reason to buy a fertilizer or pesticide from a natural provider. Ending3: [title] Introduce an assortment of fruit and herbs in your garden. [step] You can use non-toxic plants such as strawberries, cherries, lemons, cucumbers, oranges, and percalyptus, just like a garden does, but use one variety you enjoy. Ending4: You can read the ingredients and descriptions of your current produce in a store or online, or cross check the ingredients for the produce you already own. [substeps] Be aware that many natural product manufacturers do not include the ingredient's name on their products.

Answer format: ending1/ending2/ending3/ending4