Range Minimu Query: Given an array A[1,n] of n ordered objects (such as numbers), a Range Minimum Query (or RMQ) from i to j asks for the position of a minimum element in the sub-array A[i,j]. RMQs can be used to solve the lowest common ancestor problem.
The reasons that we do not eat or recommend shellfish are very similar. Shellfish are bottom feeders and feed on parasites and dead skin, many times from dead animals. They do not have appropriate digestive and filter systems to purify toxins and parasites from their body and flesh.
Certain shellfish and fish contain bacteria that can cause infection in persons with hemochromatosis, so you should avoid eating raw shellfish and fish. You want to limit or avoid red meat, which is rich in heme iron that is easily absorbed in the body.