Answer:
The most significant environmental issues of today are global warming, climate change, and the greenhouse effect. Global warming leads to other environmental issues like changes in temperature, soil erosion, and abnormal rainfall. Global warming can be tackled through control of the pollution level.
It's definitely repetition. Just finished the question and it was correct :-)
Answer:
Having Leader, Social Relationship and Norms
Explanation:
I would say D. because revising is a process in which you want to correct your writing and make it stronger.
