In an ecosystem, which of the following is NOT a trait of living organisms? Question 1 options:

A: Made of Cells with membrane bound nucleus

B: Can reproduce

C: Contains DNA

D: Responds to Stimuli

i think it will option D hope it helps

Explanation: Over the course of millions of years they dissolve away the outer shell, sometimes replacing the molecules of exoskeleton with molecules of calcite or other minerals. In time the entire shell is replaced leaving rock in the exact shape of the trilobite. That is the fossilization process at work.