North carolina biologists discovered an increase in cancer in fish within a large lake. what could be a possible reason for the increase in cancer?
i think it is because the water is acidic, but i'm not completely

How many time zone are there on earth

Plz asap can someone find the answer or the mark scheme or anything plzzz you : ) ‘it's perfectly understandable that hundreds of millions of people around the world live close to volcanoes’ use evidence to support this statement. (6 marks)

Most tornadoes carry winds speeds in a range of km per hour