Extreme weather means

1. Extreme weather refers to weather with less probability than the same period in history.

You can't delete it, because the most obvious point is that the pole of low temperature is MINUS 3 degrees Celsius. If it is inconsistent with the original intention, it cannot be deleted. "Most" embodies the accuracy of explanatory language.

3. Flood attack; Insufficient food; Facing water shortage; The heat wave struck; Sea ice is decreasing.

4. Mainly the interpretation method of column number. Through a large number of data, it is accurately and concretely explained that extreme weather and climate events have caused and will cause great harm to human beings.

(That's right)