Questions

Bioaccumulation is defined as the increase in concentration of a substance(s) in an organism or a part of that organism.

The affected organism has a higher concentration of the substance than the concentration in the organism's surrounding environment.

For the second statement: Microorganisms eat pesticide infected things. Invertebrates eat hundreds of the microorganisms and plants infected with the pesticides, accumulating a pretty large amount of the toxin in them.

The invertebrates are generally then eaten by larger invertebrates or amphibians, which ingest hundreds of similar organisms, accumulating an even higher concentration of toxins in their bodies. Then the fish eat hundreds of these organisms, accumulating the highest concentration of toxins in themselves.

Mediterranean agriculture is practised  on  the  either  side  of  the Mediterranean  Sea  in  Europe  and in   north   Africa   from   Tunisia   to Atlantic  coast,  southern  California, central  Chile,  south  western  parts of   South   Africa   and   south   and south  western  parts  of  Australia. This region is an important supplier of citrus fruits. Viticulture or grape cultivation  is  a  speciality  of  the Mediterranean region.

Rowing is the game to which Wellington Trophy is related to. In this participants will be in race in rivers.