This is a careless construction, which is grammatically correct and is not an idiom or a jargon.
your answer is symbolism.
<span>The answer is B and D. Overpopulation is among the most squeezing ecological issues, noiselessly exasperating the strengths behind an unnatural weather change, ecological contamination, living space misfortune, the 6th mass termination, escalated cultivating rehearses and the utilization of limited normal assets, for example, freshwater, arable land and non-renewable energy sources</span>
