Question

how does concentration of a pesticides change once it enter a food chain

Answer 1

ecosysthem consists all  oranganism liviling on the earth ( even micro- organism is part of ecosysthem) . The over usage of pesticides will kill or affect the pest , peat always a part if ecosysthem if a type of even extincts the whole ecosysthem will be affected , this will result in changes in food chain.

when pesticides mixs with water and plant absorbs it the chemical enter into the plant and if animal or we eat it will affect us . E.G if cows eats the grass ( the plant where the chemical entered ) it will fall sick and the from those cows will affected through that all dairy products , and even who drink the will be affected these thing might distrub the food chain

                                             HOPE THIS ANSWER IS HELPFULL

Answer 2

ecosysthem consists all  oranganism liviling on the earth ( even micro- organism is part of ecosysthem) . The over usage of pesticides will kill or affect the pest , peat always a part if ecosysthem if a type of even extincts the whole ecosysthem will be affected , this will result in changes in food chain.

when pesticides mixs with water and plant absorbs it the chemical enter into the plant and if animal or we eat it will affect us . E.G if cows eats the grass ( the plant where the chemical entered ) it will fall sick and the from those cows will affected through that all dairy products , and even who drink the will be affected these thing might distrub the food chain

                                             HOPE THIS ANSWER IS HELPFULL