carcass wrote:
Working out on such mechanical way to think to disentagle a question is not a really efficient manner to overcome this difficult test.
As such, surely knowing the grammar rules is the cornerstone but is not the way.
Based only on meaning
Displays of the aurora borealis, or "northern lights", can heat the atmosphere over the arctic enough to affect the trajectories of ballistic missiles, induce electric currents than can cause blackouts in some areas and corrosion in north-south pipelines.
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