Oh tomatoes? Well, tomatoes love to be grown in acidic soil, which increases the uptake of nickel and chromium. And they had better be organic, because common c

Oh tomatoes? Well, tomatoes love to be grown in acidic soil, which increases the uptake of nickel and chromium. And they had better be organic, because common contaminants of fertilizer salts include arsenic and cadmium. But you don't want to eat organics if they're grown from waste biproducts of animal farming, such as commonly used bone meal, because those concentrate heavy metals.