8 of them are essential and human bodys can't produce them.they should be got from foods
Answer:
(First) 10,000--->1000--->100-->10 (fourth)
Explanation:
Each trophic levels gets reduced by factor of 10.
Thus if you start with 10,000 in first, then you end with 1000 in second, 100 in third and 10 in forth.
Increasing the populations of Native fish should do the least damage.
the answer to this question is false
