Do you think pollution is a big problem nowadays
=> Yes, I think that environmental pollution is a big problem that needs to be solved in the present era. Because this problem makes the air quality less (namely oxygen). The environmental pollution is not natural, it is human and some natural phenomena. People have emitted a amount of smoke, plastic bags, etc., making the environment more polluted. Then some problems were caused by natural disasters such as floods. So we must always protect the environment.