A Douglas Fir tree farm has a 36-acre square field arranged in a 6-by-6 array. The owner wants to know the average number of trees per acre. Each cell in the table
represents one acre. The number in each cell represents the number of trees on
that acre. The farmer decides to choose a random sample of 10 acres.

Hii1977 cleaner shrimp are a species of shrimp that clean parasites from other organisms. fish allow the shrimp to eat the parasites in their mouth. the shrimp get a source of nutrition. the relationship between the shrimp and the fish is this association indicates that for the smaill aneser arecommensal,mutualistic,or parasitic for the begger one the anser are the shrimp and fish benefit each other , the shrimp harm the fish, or the fish do not benetit from the shrimp