Author Question: Which of the following characterizes the pesticide DDT and industrial chemicals such as PCBs? A) ... (Read 43 times)

jake · **on:** Aug 22, 2018

Which of the following characterizes the pesticide DDT and industrial chemicals such as PCBs?

A) Persistence in the environment
B) Biologically active
C) Relatively high toxicity
D) Propensity to accumulate in food chains
E) All of the above are correct.

Question 2

Two dominant organisms commonly found at mid-water levels of the rocky intertidal zone are ________.

A) buckshot barnacles and rockweed
B) fiddler crabs and Littorina
C) goose-necked barnacles and mussels
D) periwinkle snails and kelp
E) sea anemones and hermit crabs