1. when we perform an experiment, we
a. measure independent variables,
b. produce dependent variables.
c. produce control variables.
d. produce a comparison.
e. hold independent variables constant.

poison levels are being represented and it show how much poison the producer has and how much the consumer has   and damage the organisms in it, particularly in the predators at the end of the chain. this is because accumulating compounds cannot be excreted.

the answer to your question is sperm

explanation:

idk

2%? i tried finding the exact sorry if it's not 100% correct ; -;