But its amount was found to be in milligrams in higher tropical levels. This happened because ___________.
A. of biological magnification
B. of the existence of the food web
C. organisms of lower trophic levels were consumed by the organisms of higher trophic levels
D. All of the above
Answer:D
But its amount was found to be in milligrams in higher tropical levels. This happened because ___________.
A. of biological magnification B. of the existence of the food web C. organisms of lower trophic levels were consumed by the organisms of higher trophic levels D. All of the above