Precipitation on Cape Cod and the islands of Martha's Vineyard and Nantucket is the lowest in the New England region, averaging slightly less than 40 inches (100 cm) a year (most parts of New England average 42 to 46 inches (110 to 120 cm)).
It may not necessarily be optimal or have any variety. A balanced diet refers to a diet that does not have too much of just one thing. For instance, if you eat nothing but rice, pasta, potatoes, bread, and corn, then that is NOT a balanced diet because it has too many starches and not enough protein, fiber, or fat.
The exact make-up of a diversified, balanced and healthy diet will vary depending on individual needs (e.g. age, gender, lifestyle, degree of physical activity), cultural context, locally available foods and dietary customs. But basic principles of what constitute a healthy diet remain the same.